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(Updated Jan. 4, 2018, 4:40 p.m.) Review request for sentry, Alexander Kolbasov, Brian Towles, kalyan kumar kalvagadda, Na Li, Sergio Pena, and Vadim Spector. Repository: sentry Description (updated) ------- After steady state, a full snapshot is triggered by mainly 2 cases Sentry is "ahead" Sentry is behind Case 1 has a dependency on NOTIFICATION_SEQUENCE table. This is not reliable as it was observed that sometimes NOTIFICATION_SEQUENCE and NOTIFICATION_LOG are not in sync. As a result of this unnecessary full snapshots can be triggered. The solution is to eliminate this check. Sentry can never be ahead of HMS. Diffs ----- sentry-hdfs/sentry-hdfs-common/src/main/java/org/apache/sentry/hdfs/ServiceConstants.java a9afb151a sentry-provider/sentry-provider-db/src/main/java/org/apache/sentry/service/thrift/HMSFollower.java aa1b6a31c sentry-provider/sentry-provider-db/src/test/java/org/apache/sentry/service/thrift/TestHMSFollower.java edde886a7 Diff: https://reviews.apache.org/r/64820/diff/3/ Testing ------- mvn -f sentry-provider/sentry-provider-db/pom.xml test Thanks, Arjun Mishra
