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CHANGELOG
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devel
-----
* fixed a multi-threading issue in the agency when callElection was called
while the SuperVision was calling updateSnapshot
* added startup option `--query.tracking-with-bindvars`
This option controls whether the list of currently running queries
and the list of slow queries should contain the bind variables used
in the queries or not.
The option can be changed at runtime using the commands
// enables tracking of bind variables
// set to false to turn tracking of bind variables off
var value = true;
require("@arangodb/aql/queries").properties({
trackBindVars: value
});
* selectivity estimates are now available in the cluster
* fixed issue #2943: loadIndexesIntoMemory not returning the same structure
as the rest of the collection APIs
* fixed isuse #2949: ArangoError 1208: illegal name
* fixed issue #2874: Collection properties do not return `isVolatile`
attribute
* potential fix for issue #2939: Segmentation fault when starting
coordinator node
* fixed issue #2810: out of memory error when running UPDATE/REPLACE
on medium-size collection
* fix potential deadlock errors in collector thread
* disallow the usage of volatile collections in the RocksDB engine
by throwing an error when a collection is created with attribute
`isVolatile` set to `true`.
Volatile collections are unsupported by the RocksDB engine, so
creating them should not succeed and silently create a non-volatile
collection
* prevent V8 from issuing SIGILL instructions when it runs out of memory
Now arangod will attempt to log a FATAL error into its logfile in case V8
runs out of memory. In case V8 runs out of memory, it will still terminate the
entire process. But at least there should be something in the ArangoDB logs
indicating what the problem was. Apart from that, the arangod process should
now be exited with SIGABRT rather than SIGILL as it shouldn't return into the
V8 code that aborted the process with `__builtin_trap`.
this potentially fixes issue #2920: DBServer crashing automatically post upgrade to 3.2
* Foxx queues and tasks now ensure that the scripts in them, run on same permissions as the Foxx code who started the task / queue
* fixed issue #2928: Offset problems
* fixed issue #2876: wrong skiplist index usage in edge collection
* fixed issue #2868: cname missing from logger-follow results in rocksdb
* fixed issue #2889: Traversal query using incorrect collection id
* fixed issue #2884: AQL traversal uniqueness constraints "propagating" to other traversals? Weird results
* arangoexport: added --query; pass a aql query to export the result
* fixed issue #2879: No result when querying for the last record of a query
* ui: allows now to edit default access level for collections in database
_system for all users except the root user.
* added new option "--rocksdb.max-background-jobs"
* removed options "--rocksdb.max-background-compactions", "--rocksdb.base-background-compactions" and "--rocksdb.max-background-flushes"
* option "--rocksdb.compaction-read-ahead-size" now defaults to 2MB
v3.2.0 (2017-07-20)
-------------------
* fixed UI issues
* fixed multi-threading issues in Pregel
* fixed Foxx resilience
* added command-line option `--javascript.allow-admin-execute`
This option can be used to control whether user-defined JavaScript code
is allowed to be executed on server by sending via HTTP to the API endpoint
`/_admin/execute` with an authenticated user account.
The default value is `false`, which disables the execution of user-defined
code. This is also the recommended setting for production. In test environments,
it may be convenient to turn the option on in order to send arbitrary setup
or teardown commands for execution on the server.
v3.2.beta6 (2017-07-18)
-----------------------
* various bugfixes
v3.2.beta5 (2017-07-16)
-----------------------
* numerous bugfixes
v3.2.beta4 (2017-07-04)
-----------------------
* ui: fixed document view _from and _to linking issue for special characters
* added function `db._parse(query)` for parsing an AQL query and returning information about it
* fixed one medium priority and two low priority security user interface
issues found by owasp zap.
* ui: added index deduplicate options
* ui: fixed renaming of collections for the rocksdb storage engine
* documentation and js fixes for secondaries
* RocksDB storage format was changed, users of the previous beta/alpha versions
must delete the database directory and re-import their data
* enabled permissions on database and collection level
* added and changed some user related REST APIs
* added `PUT /_api/user/{user}/database/{database}/{collection}` to change collection permission
* added `GET /_api/user/{user}/database/{database}/{collection}`
* added optional `full` parameter to the `GET /_api/user/{user}/database/` REST call
* added user functions in the arangoshell `@arangodb/users` module
* added `grantCollection` and `revokeCollection` functions
* added `permission(user, database, collection)` to retrieve collection specific rights
* added "deduplicate" attribute for array indexes, which controls whether inserting
duplicate index values from the same document into a unique array index will lead to
an error or not:
// with deduplicate = true, which is the default value:
db._create("test");
db.test.ensureIndex({ type: "hash", fields: ["tags[*]"], deduplicate: true });
db.test.insert({ tags: ["a", "b"] });
db.test.insert({ tags: ["c", "d", "c"] }); // will work, because deduplicate = true
db.test.insert({ tags: ["a"] }); // will fail
// with deduplicate = false
db._create("test");
db.test.ensureIndex({ type: "hash", fields: ["tags[*]"], deduplicate: false });
db.test.insert({ tags: ["a", "b"] });
db.test.insert({ tags: ["c", "d", "c"] }); // will not work, because deduplicate = false
db.test.insert({ tags: ["a"] }); // will fail
The "deduplicate" attribute is now also accepted by the index creation HTTP
API endpoint POST /_api/index and is returned by GET /_api/index.
* added optimizer rule "remove-filters-covered-by-traversal"
* Debian/Ubuntu installer: make messages about future package upgrades more clear
* fix a hangup in VST
The problem happened when the two first chunks of a VST message arrived
together on a connection that was newly switched to VST.
* fix deletion of outdated WAL files in RocksDB engine
* make use of selectivity estimates in hash, skiplist and persistent indexes
in RocksDB engine
* changed VM overcommit recommendation for user-friendliness
* fix a shutdown bug in the cluster: a destroyed query could still be active
* do not terminate the entire server process if a temp file cannot be created
(Windows only)
* fix log output in the front-end, it stopped in case of too many messages
v3.2.beta3 (2017-06-27)
-----------------------
* numerous bugfixes
v3.2.beta2 (2017-06-20)
-----------------------
* potentially fixed issue #2559: Duplicate _key generated on insertion
* fix invalid results (too many) when a skipping LIMIT was used for a
traversal. `LIMIT x` or `LIMIT 0, x` were not affected, but `LIMIT s, x`
may have returned too many results
* fix races in SSL communication code
* fix invalid locking in JWT authentication cache, which could have
crashed the server
* fix invalid first group results for sorted AQL COLLECT when LIMIT
was used
* fix potential race, which could make arangod hang on startup
* removed `exception` field from transaction error result; users should throw
explicit `Error` instances to return custom exceptions (addresses issue #2561)
* fixed issue #2613: Reduce log level when Foxx manager tries to self heal missing database
* add a read only mode for users and collection level authorization
* removed `exception` field from transaction error result; users should throw
explicit `Error` instances to return custom exceptions (addresses issue #2561)
* fixed issue #2677: Foxx disabling development mode creates non-deterministic service bundle
* fixed issue #2684: Legacy service UI not working
v3.2.beta1 (2017-06-12)
-----------------------
* provide more context for index errors (addresses issue #342)
* arangod now validates several OS/environment settings on startup and warns if
the settings are non-ideal. Most of the checks are executed on Linux systems only.
* fixed issue #2515: The replace-or-with-in optimization rule might prevent use of indexes
* added `REGEX_REPLACE` AQL function
* the RocksDB storage format was changed, users of the previous alpha versions
must delete the database directory and re-import their data
* added server startup option `--query.fail-on-warning`
setting this option to `true` will abort any AQL query with an exception if
it causes a warning at runtime. The value can be overridden per query by
setting the `failOnWarning` attribute in a query's options.
* added --rocksdb.num-uncompressed-levels to adjust number of non-compressed levels
* added checks for memory managment and warn (i. e. if hugepages are enabled)
* set default SSL cipher suite string to "HIGH:!EXPORT:!aNULL@STRENGTH"
* fixed issue #2469: Authentication = true does not protect foxx-routes
* fixed issue #2459: compile success but can not run with rocksdb
* `--server.maximal-queue-size` is now an absolute maximum. If the queue is
full, then 503 is returned. Setting it to 0 means "no limit".
* (Enterprise only) added authentication against an LDAP server
* fixed issue #2083: Foxx services aren't distributed to all coordinators
* fixed issue #2384: new coordinators don't pick up existing Foxx services
* fixed issue #2408: Foxx service validation causes unintended side-effects
* extended HTTP API with routes for managing Foxx services
* added distinction between hasUser and authorized within Foxx
(cluster internal requests are authorized requests but don't have a user)
* arangoimp now has a `--threads` option to enable parallel imports of data
* PR #2514: Foxx services that can't be fixed by self-healing now serve a 503 error
* added `time` function to `@arangodb` module
v3.2.alpha4 (2017-04-25)
------------------------
* fixed issue #2450: Bad optimization plan on simple query
* fixed issue #2448: ArangoDB Web UI takes no action when Delete button is clicked
* fixed issue #2442: Frontend shows already deleted databases during login
* added 'x-content-type-options: nosniff' to avoid MSIE bug
* set default value for `--ssl.protocol` from TLSv1 to TLSv1.2.
* AQL breaking change in cluster:
The SHORTEST_PATH statement using edge-collection names instead
of a graph name now requires to explicitly name the vertex-collection names
within the AQL query in the cluster. It can be done by adding `WITH <name>`
at the beginning of the query.
Example:
```
FOR v,e IN OUTBOUND SHORTEST_PATH @start TO @target edges [...]
```
Now has to be:
```
WITH vertices
FOR v,e IN OUTBOUND SHORTEST_PATH @start TO @target edges [...]
```
This change is due to avoid dead-lock sitations in clustered case.
An error stating the above is included.
* add implicit use of geo indexes when using SORT/FILTER in AQL, without
the need to use the special-purpose geo AQL functions `NEAR` or `WITHIN`.
the special purpose `NEAR` AQL function can now be substituted with the
following AQL (provided there is a geo index present on the `doc.latitude`
and `doc.longitude` attributes):
FOR doc in geoSort
SORT DISTANCE(doc.latitude, doc.longitude, 0, 0)
LIMIT 5
RETURN doc
`WITHIN` can be substituted with the following AQL:
FOR doc in geoFilter
FILTER DISTANCE(doc.latitude, doc.longitude, 0, 0) < 2000
RETURN doc
Compared to using the special purpose AQL functions this approach has the
advantage that it is more composable, and will also honor any `LIMIT` values
used in the AQL query.
* potential fix for shutdown hangs on OSX
* added KB, MB, GB prefix for integer parameters, % for integer parameters
with a base value
* added JEMALLOC 4.5.0
* added `--vm.resident-limit` and `--vm.path` for file-backed memory mapping
after reaching a configurable maximum RAM size
* try recommended limit for file descriptors in case of unlimited
hard limit
* issue #2413: improve logging in case of lock timeout and deadlocks
* added log topic attribute to /_admin/log api
* removed internal build option `USE_DEV_TIMERS`
Enabling this option activated some proprietary timers for only selected
events in arangod. Instead better use `perf` to gather timings.
v3.2.alpha3 (2017-03-22)
------------------------
* increase default collection lock timeout from 30 to 900 seconds
* added function `db._engine()` for retrieval of storage engine information at
server runtime
There is also an HTTP REST handler at GET /_api/engine that returns engine
information.
* require at least cmake 3.2 for building ArangoDB
* make arangod start with less V8 JavaScript contexts
This speeds up the server start (a little bit) and makes it use less memory.
Whenever a V8 context is needed by a Foxx action or some other operation and
there is no usable V8 context, a new one will be created dynamically now.
Up to `--javascript.v8-contexts` V8 contexts will be created, so this option
will change its meaning. Previously as many V8 contexts as specified by this
option were created at server start, and the number of V8 contexts did not
change at runtime. Now up to this number of V8 contexts will be in use at the
same time, but the actual number of V8 contexts is dynamic.
The garbage collector thread will automatically delete unused V8 contexts after
a while. The number of spare contexts will go down to as few as configured in
the new option `--javascript.v8-contexts-minimum`. Actually that many V8 contexts
are also created at server start.
The first few requests in new V8 contexts will take longer than in contexts
that have been there already. Performance may therefore suffer a bit for the
initial requests sent to ArangoDB or when there are only few but performance-
critical situations in which new V8 contexts will be created. If this is a
concern, it can easily be fixed by setting `--javascipt.v8-contexts-minimum`
and `--javascript.v8-contexts` to a relatively high value, which will guarantee
that many number of V8 contexts to be created at startup and kept around even
when unused.
Waiting for an unused V8 context will now also abort if no V8 context can be
acquired/created after 120 seconds.
* improved diagnostic messages written to logfiles by supervisor process
* fixed issue #2367
* added "bindVars" to attributes of currently running and slow queries
* added "jsonl" as input file type for arangoimp
* upgraded version of bundled zlib library from 1.2.8 to 1.2.11
* added input file type `auto` for arangoimp so it can automatically detect the
type of the input file from the filename extension
* fixed variables parsing in GraphQL
* added `--translate` option for arangoimp to translate attribute names from
the input files to attriubte names expected by ArangoDB
The `--translate` option can be specified multiple times (once per translation
to be executed). The following example renames the "id" column from the input
file to "_key", and the "from" column to "_from", and the "to" column to "_to":
arangoimp --type csv --file data.csv --translate "id=_key" --translate "from=_from" --translate "to=_to"
`--translate` works for CSV and TSV inputs only.
* changed default value for `--server.max-packet-size` from 128 MB to 256 MB
* fixed issue #2350
* fixed issue #2349
* fixed issue #2346
* fixed issue #2342
* change default string truncation length from 80 characters to 256 characters for
`print`/`printShell` functions in ArangoShell and arangod. This will emit longer
prefixes of string values before truncating them with `...`, which is helpful
for debugging.
* always validate incoming JSON HTTP requests for duplicate attribute names
Incoming JSON data with duplicate attribute names will now be rejected as
invalid. Previous versions of ArangoDB only validated the uniqueness of
attribute names inside incoming JSON for some API endpoints, but not
consistently for all APIs.
* don't let read-only transactions block the WAL collector
* allow passing own `graphql-sync` module instance to Foxx GraphQL router
* arangoexport can now export to csv format
* arangoimp: fixed issue #2214
* Foxx: automatically add CORS response headers
* added "OPTIONS" to CORS `access-control-allow-methods` header
* Foxx: Fix arangoUser sometimes not being set correctly
* fixed issue #1974
v3.2.alpha2 (2017-02-20)
------------------------
* ui: fixed issue #2065
* ui: fixed a dashboard related memory issue
* Internal javascript rest actions will now hide their stack traces to the client
unless maintainer mode is activated. Instead they will always log to the logfile
* Removed undocumented internal HTTP API:
* PUT _api/edges
The documented GET _api/edges and the undocumented POST _api/edges remains unmodified.
* updated V8 version to 5.7.0.0
* change undocumented behaviour in case of invalid revision ids in
If-Match and If-None-Match headers from 400 (BAD) to 412 (PRECONDITION
FAILED).
* change undocumented behaviour in case of invalid revision ids in
JavaScript document operations from 1239 ("illegal document revision")
to 1200 ("conflict").
* added data export tool, arangoexport.
arangoexport can be used to export collections to json, jsonl or xml
and export a graph or collections to xgmml.
* fixed a race condition when closing a connection
* raised default hard limit on threads for very small to 64
* fixed negative counting of http connection in UI
v3.2.alpha1 (2017-02-05)
------------------------
* added figure `httpRequests` to AQL query statistics
* removed revisions cache intermediate layer implementation
* obsoleted startup options `--database.revision-cache-chunk-size` and
`--database.revision-cache-target-size`
* fix potential port number over-/underruns
* added startup option `--log.shorten-filenames` for controlling whether filenames
in log messages should be shortened to just the filename with the absolute path
* removed IndexThreadFeature, made `--database.index-threads` option obsolete
* changed index filling to make it more parallel, dispatch tasks to boost::asio
* more detailed stacktraces in Foxx apps
* generated Foxx services now use swagger tags
v3.1.24 (XXXX-XX-XX)
--------------------
* fixed one more LIMIT issue in traversals
v3.1.23 (2017-06-19)
--------------------
* potentially fixed issue #2559: Duplicate _key generated on insertion
* fix races in SSL communication code
* fix invalid results (too many) when a skipping LIMIT was used for a
traversal. `LIMIT x` or `LIMIT 0, x` were not affected, but `LIMIT s, x`
may have returned too many results
* fix invalid first group results for sorted AQL COLLECT when LIMIT
was used
* fix invalid locking in JWT authentication cache, which could have
crashed the server
* fix undefined behavior in traverser when traversals were used inside
a FOR loop
v3.1.22 (2017-06-07)
--------------------
* fixed issue #2505: Problem with export + report of a bug
* documented changed behavior of WITH
* fixed ui glitch in aardvark
* avoid agency compaction bug
* fixed issue #2283: disabled proxy communication internally
v3.1.21 (2017-05-22)
--------------------
* fixed issue #2488: AQL operator IN error when data use base64 chars
* more randomness in seeding RNG
v3.1.20 (2016-05-16)
--------------------
* fixed incorrect sorting for distributeShardsLike
* improve reliability of AgencyComm communication with Agency
* fixed shard numbering bug, where ids were erouneously incremented by 1
* remove an unnecessary precondition in createCollectionCoordinator
* funny fail rotation fix
* fix in SimpleHttpClient for correct advancement of readBufferOffset
* forward SIG_HUP in supervisor process to the server process to fix logrotaion
You need to stop the remaining arangod server process manually for the upgrade to work.
v3.1.19 (2017-04-28)
--------------------
* Fixed a StackOverflow issue in Traversal and ShortestPath. Occured if many (>1000) input
values in a row do not return any result. Fixes issue: #2445
* fixed issue #2448
* fixed issue #2442
* added 'x-content-type-options: nosniff' to avoid MSIE bug
* fixed issue #2441
* fixed issue #2440
* Fixed a StackOverflow issue in Traversal and ShortestPath. Occured if many (>1000) input
values in a row do not return any result. Fixes issue: #2445
* fix occasional hanging shutdowns on OS X
v3.1.18 (2017-04-18)
--------------------
* fixed error in continuous synchronization of collections
* fixed spurious hangs on server shutdown
* better error messages during restore collection
* completely overhaul supervision. More detailed tests
* Fixed a dead-lock situation in cluster traversers, it could happen in
rare cases if the computation on one DBServer could be completed much earlier
than the other server. It could also be restricted to SmartGraphs only.
* (Enterprise only) Fixed a bug in SmartGraph DepthFirstSearch. In some
more complicated queries, the maxDepth limit of 1 was not considered strictly
enough, causing the traverser to do unlimited depth searches.
* fixed issue #2415
* fixed issue #2422
* fixed issue #1974
v3.1.17 (2017-04-04)
--------------------
* (Enterprise only) fixed a bug where replicationFactor was not correctly
forwarded in SmartGraph creation.
* fixed issue #2404
* fixed issue #2397
* ui - fixed smart graph option not appearing
* fixed issue #2389
* fixed issue #2400
v3.1.16 (2017-03-27)
--------------------
* fixed issue #2392
* try to raise file descriptors to at least 8192, warn otherwise
* ui - aql editor improvements + updated ace editor version (memory leak)
* fixed lost HTTP requests
* ui - fixed some event issues
* avoid name resolution when given connection string is a valid ip address
* helps with issue #1842, bug in COLLECT statement in connection with LIMIT.
* fix locking bug in cluster traversals
* increase lock timeout defaults
* increase various cluster timeouts
* limit default target size for revision cache to 1GB, which is better for
tight RAM situations (used to be 40% of (totalRAM - 1GB), use
--database.revision-cache-target-size <VALUEINBYTES> to get back the
old behaviour
* fixed a bug with restarted servers indicating status as "STARTUP"
rather that "SERVING" in Nodes UI.
v3.1.15 (2017-03-20)
--------------------
* add logrotate configuration as requested in #2355
* fixed issue #2376
* ui - changed document api due a chrome bug
* ui - fixed a submenu bug
* added endpoint /_api/cluster/endpoints in cluster case to get all
coordinator endpoints
* fix documentation of /_api/endpoint, declaring this API obsolete.
* Foxx response objects now have a `type` method for manipulating the content-type header
* Foxx tests now support `xunit` and `tap` reporters
v3.1.14 (2017-03-13)
--------------------
* ui - added feature request (multiple start nodes within graph viewer) #2317
* added missing locks to authentication cache methods
* ui - added feature request (multiple start nodes within graph viewer) #2317
* ui - fixed wrong merge of statistics information from different coordinators
* ui - fixed issue #2316
* ui - fixed wrong protocol usage within encrypted environment
* fixed compile error on Mac Yosemite
* minor UI fixes
v3.1.13 (2017-03-06)
--------------------
* fixed variables parsing in GraphQL
* fixed issue #2214
* fixed issue #2342
* changed thread handling to queue only user requests on coordinator
* use exponential backoff when waiting for collection locks
* repair short name server lookup in cluster in the case of a removed
server
v3.1.12 (2017-02-28)
--------------------
* disable shell color escape sequences on Windows
* fixed issue #2326
* fixed issue #2320
* fixed issue #2315
* fixed a race condition when closing a connection
* raised default hard limit on threads for very small to 64
* fixed negative counting of http connection in UI
* fixed a race when renaming collections
* fixed a race when dropping databases
v3.1.11 (2017-02-17)
--------------------
* fixed a race between connection closing and sending out last chunks of data to clients
when the "Connection: close" HTTP header was set in requests
* ui: optimized smart graph creation usability
* ui: fixed #2308
* fixed a race in async task cancellation via `require("@arangodb/tasks").unregisterTask()`
* fixed spuriously hanging threads in cluster AQL that could sit idle for a few minutes
* fixed potential numeric overflow for big index ids in index deletion API
* fixed sort issue in cluster, occurring when one of the local sort buffers of a
GatherNode was empty
* reduce number of HTTP requests made for certain kinds of join queries in cluster,
leading to speedup of some join queries
* supervision deals with demised coordinators correctly again
* implement a timeout in TraverserEngineRegistry
* agent communication reduced in large batches of append entries RPCs
* inception no longer estimates RAFT timings
* compaction in agents has been moved to a separate thread
* replicated logs hold local timestamps
* supervision jobs failed leader and failed follower revisited for
function in precarious stability situations
* fixed bug in random number generator for 64bit int
v3.1.10 (2017-02-02)
--------------------
* updated versions of bundled node modules:
- joi: from 8.4.2 to 9.2.0
- joi-to-json-schema: from 2.2.0 to 2.3.0
- sinon: from 1.17.4 to 1.17.6
- lodash: from 4.13.1 to 4.16.6
* added shortcut for AQL ternary operator
instead of `condition ? true-part : false-part` it is now possible to also use a
shortcut variant `condition ? : false-part`, e.g.
FOR doc IN docs RETURN doc.value ?: 'not present'
instead of
FOR doc IN docs RETURN doc.value ? doc.value : 'not present'
* fixed wrong sorting order in cluster, if an index was used to sort with many
shards.
* added --replication-factor, --number-of-shards and --wait-for-sync to arangobench
* turn on UTF-8 string validation for VelocyPack values received via VST connections
* fixed issue #2257
* upgraded Boost version to 1.62.0
* added optional detail flag for db.<collection>.count()
setting the flag to `true` will make the count operation returned the per-shard
counts for the collection:
db._create("test", { numberOfShards: 10 });
for (i = 0; i < 1000; ++i) {
db.test.insert({value: i});
}
db.test.count(true);
{
"s100058" : 99,
"s100057" : 103,
"s100056" : 100,
"s100050" : 94,
"s100055" : 90,
"s100054" : 122,
"s100051" : 109,
"s100059" : 99,
"s100053" : 95,
"s100052" : 89
}
* added optional memory limit for AQL queries:
db._query("FOR i IN 1..100000 SORT i RETURN i", {}, { options: { memoryLimit: 100000 } });
This option limits the default maximum amount of memory (in bytes) that a single
AQL query can use.
When a single AQL query reaches the specified limit value, the query will be
aborted with a *resource limit exceeded* exception. In a cluster, the memory
accounting is done per shard, so the limit value is effectively a memory limit per
query per shard.
The global limit value can be overriden per query by setting the *memoryLimit*
option value for individual queries when running an AQL query.
* added server startup option `--query.memory-limit`
* added convenience function to create vertex-centric indexes.
Usage: `db.collection.ensureVertexCentricIndex("label", {type: "hash", direction: "outbound"})`
That will create an index that can be used on OUTBOUND with filtering on the
edge attribute `label`.
* change default log output for tools to stdout (instead of stderr)
* added option -D to define a configuration file environment key=value
* changed encoding behavior for URLs encoded in the C++ code of ArangoDB:
previously the special characters `-`, `_`, `~` and `.` were returned as-is
after URL-encoding, now `.` will be encoded to be `%2e`.
This also changes the behavior of how incoming URIs are processed: previously
occurrences of `..` in incoming request URIs were collapsed (e.g. `a/../b/` was
collapsed to a plain `b/`). Now `..` in incoming request URIs are not collapsed.
* Foxx request URL suffix is no longer unescaped
* @arangodb/request option json now defaults to `true` if the response body is not empty and encoding is not explicitly set to `null` (binary).
The option can still be set to `false` to avoid unnecessary attempts at parsing the response as JSON.
* Foxx configuration values for unknown options will be discarded when saving the configuration in production mode using the web interface
* module.context.dependencies is now immutable
* process.stdout.isTTY now returns `true` in arangosh and when running arangod with the `--console` flag
* add support for Swagger tags in Foxx
v3.1.9 (XXXX-XX-XX)
-------------------
* macos CLI package: store databases and apps in the users home directory
* ui: fixed re-login issue within a non system db, when tab was closed
* fixed a race in the VelocyStream Commtask implementation
* fixed issue #2256
v3.1.8 (2017-01-09)
-------------------
* add Windows silent installer
* add handling of debug symbols during Linux & windows release builds.
* fixed issue #2181
* fixed issue #2248: reduce V8 max old space size from 3 GB to 1 GB on 32 bit systems
* upgraded Boost version to 1.62.0
* fixed issue #2238
* fixed issue #2234
* agents announce new endpoints in inception phase to leader
* agency leadership accepts updatet endpoints to given uuid
* unified endpoints replace localhost with 127.0.0.1
* fix several problems within an authenticated cluster
v3.1.7 (2016-12-29)
-------------------
* fixed one too many elections in RAFT
* new agency comm backported from devel
v3.1.6 (2016-12-20)
-------------------
* fixed issue #2227
* fixed issue #2220
* agency constituent/agent bug fixes in race conditions picking up
leadership
* supervision does not need waking up anymore as it is running
regardless
* agents challenge their leadership more rigorously
v3.1.5 (2016-12-16)
-------------------
* lowered default value of `--database.revision-cache-target-size` from 75% of
RAM to less than 40% of RAM
* fixed issue #2218
* fixed issue #2217
* Foxx router.get/post/etc handler argument can no longer accidentally omitted
* fixed issue #2223
v3.1.4 (2016-12-08)
-------------------
* fixed issue #2211
* fixed issue #2204
* at cluster start, coordinators wait until at least one DBserver is there,