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from metastore HIVE-27746 introduced ALTER_PARTITIONS event type which is an optimization of reducing the bulk ALTER_PARTITION events into a single event. The components version is updated to pick up this change. It would be a good optimization to include this in Impala so that the number of events consumed by event processor would be significantly reduced and help event processor to catch up with events quickly. This patch enables the ability to consume ALTER_PARTITIONS event. The downside of this patch is that, there is no before_partitions object in the event message. This can cause partitions to be refreshed even on trivial changes to them. HIVE-29141 will address this concern. Testing: - Added an end-to-end test to verify consuming the ALTER_PARTITIONS event. Also, bigger time outs were added in this test as there was flakiness observed while looping this test several times. Change-Id: I009a87ef5e2c331272f9e2d7a6342cc860e64737 Reviewed-on: http://gerrit.cloudera.org:8080/22554 Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Csaba Ringhofer <csringhofer@cloudera.com>