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Review request for samza. Repository: samza Description ------- Every local task store is backed up by a kafka changelog topic. Due to log compaction, delete tombstones of the changelog topic have a ttl of delete.retention.ms. Replaying the events from the changelog that has missing delete tombstones, would result in creation of an inconsistent local store(due to the missing of some delete events). This patch deletes the local stores in which difference between current time and last modified time of the offset file is greater than delete.retention.ms during the container startup. Diffs ----- samza-core/src/main/java/org/apache/samza/storage/StorageRecovery.java 9329edf7d724f3a0d9235354bb77936f713e3b5f samza-core/src/main/scala/org/apache/samza/config/StorageConfig.scala be3f1068f7921c9c8f8697577efea6580672813e samza-core/src/main/scala/org/apache/samza/container/SamzaContainer.scala 05a996c98075ea8ed3767af666b9beeb1933f2a6 samza-core/src/main/scala/org/apache/samza/storage/TaskStorageManager.scala 0b7bcdda1639eea8239a69c31bdf42558e9077d2 samza-core/src/test/scala/org/apache/samza/storage/TestTaskStorageManager.scala 4d40f520e54beb643acd8410c772b75e2f6a9162 Diff: https://reviews.apache.org/r/52476/diff/ Testing ------- Unit testing and manual testing has been done to verify the functionality. Thanks, Shanthoosh Venkataraman
