Shixiong Zhu ea31f92bb8 [SPARK-19267][SS] Fix a race condition when stopping StateStore ... ## What changes were proposed in this pull request? There is a race condition when stopping StateStore which makes `StateStoreSuite.maintenance` flaky. `StateStore.stop` doesn't wait for the running task to finish, and an out-of-date task may fail `doMaintenance` and cancel the new task. Here is a reproducer: dde1b5b106 This PR adds MaintenanceTask to eliminate the race condition. ## How was this patch tested? Jenkins Author: Shixiong Zhu <shixiong@databricks.com> Author: Tathagata Das <tathagata.das1565@gmail.com> Closes #16627 from zsxwing/SPARK-19267.		2017-01-20 17:49:26 -08:00
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benchmarks	[SPARK-17335][SQL] Fix ArrayType and MapType CatalogString.	2016-09-03 19:02:20 +02:00
src	[SPARK-19267][SS] Fix a race condition when stopping StateStore	2017-01-20 17:49:26 -08:00
pom.xml	[SPARK-17807][CORE] split test-tags into test-JAR	2016-12-21 16:37:20 -08:00