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Review request for Aurora, Jordan Ly and Stephan Erb. Repository: aurora Description ------- This patch introduces map-based volatile stores, most of which were revived from git history with minimal changes. The DB storage system is now only used in a temporary storage when replaying a snapshot containing the `dbScript` field. Please take special care to double-check my work in `SnapshotStoreImpl`, as it must function for backwards compatibility with `Snapshot`s in the wild. Another area of interest is the implementation of `MemJobUpdateStore`, which must have nuanced behavior for compatibility with `DbJobUpdateStore`. Most of this stems from behind-the-scenes interaction with `LockStore` and use of cascading deletes. Note that this change removes the transactional nature of in-memory storage operations as well as the `READ COMMITTED` transaction isolation previously available to some stores (proven in necessary changes to `StorageTransactionTest`). This means some stores will permit dirty reads when they previously did not. `TaskStore` has always had this non-transactional behavior by default, as the DB task store was never deemed suitable for production. Nonetheless, this non-transactional behavior should be considered safe as the scheduler fails over on a storage operation failure, and relies on the persistent log storage for transaction atomicity. See the [mailing list discussion](https://lists.apache.org/thread.html/0bb74c78da7fa12954e2438e8011b3bff73fe3bfdafeaaa2ff00a98e@%3Cdev.aurora.apache.org%3E) for context. Diffs ----- RELEASE-NOTES.md c58e68080beb1740d92639601ef7cc29c63be37e api/src/main/thrift/org/apache/aurora/gen/storage.thrift 9ee9eff6c3d657decd93458dc3e6792a30614a60 docs/reference/scheduler-configuration.md 4e3f90713c307e3b9e9f84c29343af7f014f0165 examples/vagrant/upstart/aurora-scheduler.conf 63fcc87be653835cb3c3f25dae4164f1d7c8d4da src/jmh/java/org/apache/aurora/benchmark/SchedulingBenchmarks.java cb783ce4e4b40f173fb3b1cbd0094a5a4e0300a5 src/jmh/java/org/apache/aurora/benchmark/SnapshotBenchmarks.java ae59f3def75d0e1d3866c8d2f85063456643e9a6 src/jmh/java/org/apache/aurora/benchmark/StateManagerBenchmarks.java b4f14f1f352dbe56afe57d66349ae5ae57533050 src/jmh/java/org/apache/aurora/benchmark/StatusUpdateBenchmark.java c81387f24d554bcb2ee73e49028ba068ad11e4d6 src/jmh/java/org/apache/aurora/benchmark/TaskStoreBenchmarks.java 5b4d2a267b9cc1a14b915a1a10d63b4f4d174d51 src/jmh/java/org/apache/aurora/benchmark/ThriftApiBenchmarks.java 440c4fc551905da513df5dae21d0eefe6a42ceeb src/jmh/java/org/apache/aurora/benchmark/UpdateStoreBenchmarks.java cac02a55d26b2934099a2b03457c703600296292 src/main/java/org/apache/aurora/scheduler/app/SchedulerMain.java bb7055ed6826d57cb6b5c5c77e4a27c3bcdd10c7 src/main/java/org/apache/aurora/scheduler/storage/JobUpdateStore.java 52c3c6618a3cf1009435ca8a9cece36365913e55 src/main/java/org/apache/aurora/scheduler/storage/Storage.java 6c676693e531541ef9aec7f7a130c119ebf35df3 src/main/java/org/apache/aurora/scheduler/storage/Util.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/backup/TemporaryStorage.java bad05f5bf1976bb590e8dd7af9b43d5d30e892a9 src/main/java/org/apache/aurora/scheduler/storage/db/DbJobUpdateStore.java cbe5a0deff1ebc38a9618e7d89ab073dfaf78d36 src/main/java/org/apache/aurora/scheduler/storage/db/DbModule.java 0a2516e4843b8f920700ece70b3cc816d2acecf0 src/main/java/org/apache/aurora/scheduler/storage/db/DbStorage.java 7904e3880d214aac1013ce18265fed924ef7897e src/main/java/org/apache/aurora/scheduler/storage/db/DbUtil.java 942d180fe1a8b7a583e812f9106ee0e8db1bea55 src/main/java/org/apache/aurora/scheduler/storage/log/LogStorageModule.java 835f1604c0c5d913a87d570ee01d053bbbf92ecb src/main/java/org/apache/aurora/scheduler/storage/log/SnapshotStoreImpl.java 9d2164f4f2d18e4595d3039d64cedacb7df00ae2 src/main/java/org/apache/aurora/scheduler/storage/log/WriteAheadStorage.java d145259653dd4df90e3877fc3e744e24c7a15d13 src/main/java/org/apache/aurora/scheduler/storage/mem/InMemStoresModule.java 1b491f977cf3a81e61f1333082be0547420306d4 src/main/java/org/apache/aurora/scheduler/storage/mem/MemAttributeStore.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/MemJobUpdateStore.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/MemLockStore.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/MemQuotaStore.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/MemSchedulerStore.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/MemStorage.java PRE-CREATION src/main/java/org/apache/aurora/scheduler/storage/mem/Util.java c28fb65010af5e3db925487929d4e0e12b4101a4 src/main/java/org/apache/aurora/scheduler/updater/JobUpdateControllerImpl.java 54202359382bfe39e7cbaec0bf4c7d65d10ca13b src/test/java/org/apache/aurora/scheduler/app/local/LocalSchedulerMain.java b63f014020ea9698d5869a92ca656823a923c21b src/test/java/org/apache/aurora/scheduler/cron/quartz/AuroraCronJobTest.java 2b817076d6beb09586d4711bc10bceb31f3b74e1 src/test/java/org/apache/aurora/scheduler/cron/quartz/CronIT.java 8556253fc11f6027316871eb9dc66d8627a77fe6 src/test/java/org/apache/aurora/scheduler/cron/quartz/CronJobManagerImplTest.java 81440f5689f9538a4c7a9e6700bf03ca89c4ba85 src/test/java/org/apache/aurora/scheduler/http/MaintenanceTest.java f94b58b77b7c6ce824914af7e1147e73ad5a7eed src/test/java/org/apache/aurora/scheduler/scheduling/TaskSchedulerImplTest.java 09f443bca90f154b547d28ca5fd5be08177fdf99 src/test/java/org/apache/aurora/scheduler/state/LockManagerImplTest.java 19f9de312596395eff81bbfd073a5f617d2ef84c src/test/java/org/apache/aurora/scheduler/state/StateManagerImplTest.java 24176fe089703386e8246f6add1965c111c136ed src/test/java/org/apache/aurora/scheduler/stats/ResourceCounterTest.java d73656dc8fb8764c7a66eed3ea789554ce0ecc52 src/test/java/org/apache/aurora/scheduler/storage/backup/RecoveryTest.java 04ec7715ba9a9d47c99d4ccb92939f3e561e1a60 src/test/java/org/apache/aurora/scheduler/storage/db/AttributeStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/db/DbAttributeStoreTest.java f47f4a8a492fb43bacd909dc520256ed028531dd src/test/java/org/apache/aurora/scheduler/storage/db/DbCronJobStoreTest.java b68298ab50a3621da8596947619f2d1c34d2d194 src/test/java/org/apache/aurora/scheduler/storage/db/DbJobUpdateStoreTest.java 8fca54becde34a0d10d60e05d3809fc1c41233bf src/test/java/org/apache/aurora/scheduler/storage/db/DbLockStoreTest.java 8ed58e01eea09ab9f1aa4d269a5e59ce9c9c2191 src/test/java/org/apache/aurora/scheduler/storage/db/DbQuotaStoreTest.java 275d0fd93819169550ce39c8ddfa6c4fa0e4d920 src/test/java/org/apache/aurora/scheduler/storage/db/DbSchedulerStoreTest.java a6320bf687aa41c698bdc6a2c0b5208624cff4a3 src/test/java/org/apache/aurora/scheduler/storage/db/DbTaskStoreTest.java bcf5be43ab69ef565bb68f9235b4c43d385898aa src/test/java/org/apache/aurora/scheduler/storage/db/JobUpdateStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/db/LockStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/db/QuotaStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/db/SchedulerStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/log/SnapshotStoreImplIT.java 7f41430975d46440a404ac58395582f66fd902d4 src/test/java/org/apache/aurora/scheduler/storage/mem/InMemTaskStoreTest.java 02719c312294b58525c1fddd3ed096a9b1cef601 src/test/java/org/apache/aurora/scheduler/storage/mem/MemAttributeStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/mem/MemCronJobStoreTest.java 26fe42992a7e1ae0c07b851383e9490141694972 src/test/java/org/apache/aurora/scheduler/storage/mem/MemJobUpdateStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/mem/MemLockStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/mem/MemQuotaStoreTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/mem/MemStorageTest.java PRE-CREATION src/test/java/org/apache/aurora/scheduler/storage/mem/StorageTransactionTest.java 25f34e2bc26c6d4754c1591fad7f2165dd465d32 src/test/java/org/apache/aurora/scheduler/thrift/ThriftIT.java 6b4b17f8dafd5c2d751dcda3080b476335f8aec0 src/test/java/org/apache/aurora/scheduler/updater/JobUpdaterIT.java 04a6e1e54a7ee61f1d35b3f5e9044236983fe019 Diff: https://reviews.apache.org/r/62869/diff/1/ Testing ------- Still need to complete (but should not block review): * Post benchmark results (i've done these piecemeal, and as should be expected - things are much faster) * Run `./src/test/sh/org/apache/aurora/e2e/test_end_to_end.sh` from scratch at this patch. * Run `./src/test/sh/org/apache/aurora/e2e/test_end_to_end.sh` on master, then this patch, then on master. This verifies some level of replay compatibility between versions. Thanks, Bill Farner
