Cloud configurable #142
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Cloud configurable #142
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facebook#7888) Summary: This provides a workaround for two race conditions that will be fixed in a more sophisticated way later. This PR: (1) Makes the client serialize calls to `Timer::Start()` and `Timer::Shutdown()` (see facebook#7711). The long-term fix will be to make those functions thread-safe. (2) Makes `PeriodicWorkScheduler` atomically add/cancel work together with starting/shutting down its `Timer`. The long-term fix will be for `Timer` API to offer more specialized APIs so the client will not need to synchronize. Pull Request resolved: facebook#7888 Test Plan: ran the repro provided in facebook#7881 Reviewers: igor Subscribers: Differential Revision: https://rockset.phacility.com/D25990891
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This is the first pass at adding a MockCloudStorageProvider. The Mock Provider treats the "cloud buckets/paths" as alternative directories on the local machine.
By compiling RocksDB with USE_AWS or USE_CLOUD, the "core" RocksDB tests can be run against a cloud environment. This environment can be activated by using TEST_ENV_URI="provider=mock" (to test against the mock provider) or TEST_ENV_URI="id=aws" (to test against AWS/S3).
One db_cloud_test (CopyObjects) is still failing for both Cloud/AWS and the "DirectReads" test also fails for Mock. This testing has exposed a race condition in the scheduler shutdown that needs further investigation. A full test run of the RocksDB test suite against the MockProvider has yet to be undertaken (pending resolution of these other issues).