Sai Hemanth Gantasala has uploaded this change for review. ( http://gerrit.cloudera.org:8080/21430
Change subject: IMPALA-12680: Fix NullPointerException during AlterTableAddPartitions ...................................................................... IMPALA-12680: Fix NullPointerException during AlterTableAddPartitions When global INVALIDATE METADATA is run at the same time while AlterTableAddPartition statement is being run, a precondition check in addHmsPartitions() could lead to NullPointerException. This happens due to Map<String, Long> partitionToEventId being initialized to null when event processer is not active. We should always initialize 'partitionToEventId' to empty hash map regardless of the state of event processor. If the event processor is not active, then addHmsPartitions() adds partitions that are directly fetched from metastore. Note: Also, addressed the same issue that could potentially happen in AlterTableRecoverPartitions. Testing: - Verified manually that NullPointerException scenario is avoided. - Added a unit test to verify the above use case. Change-Id: I730fed311ebc09762dccc152d9583d5394b0b9b3 --- M fe/src/main/java/org/apache/impala/service/BackendConfig.java M fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java M fe/src/main/java/org/apache/impala/util/DebugUtils.java M fe/src/test/java/org/apache/impala/catalog/events/MetastoreEventsProcessorTest.java 4 files changed, 58 insertions(+), 10 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/30/21430/1 -- To view, visit http://gerrit.cloudera.org:8080/21430 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I730fed311ebc09762dccc152d9583d5394b0b9b3 Gerrit-Change-Number: 21430 Gerrit-PatchSet: 1 Gerrit-Owner: Sai Hemanth Gantasala <saihema...@cloudera.com>
