Sai Hemanth Gantasala has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/23159


Change subject: IMPALA-14082: Support batch processing of RELOAD events on same 
table
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IMPALA-14082: Support batch processing of RELOAD events on same table

Currently, RELOAD events of partitioned table are processed one after
the other. Processing them one by one acquires the table lock multiple
times to load individual partitions in sequence. This also keeps the
table version changing which impacts performance of coordinators in
local-catalog mode - query planning needs retry to handle
InconsistentMetadataFetchException due to table version changes.

This patch handles the batch processing logic RELOAD events on same
table.

Testing:
- Added an end-to-end to verify the batching.

Change-Id: Ie3e9a99b666a1c928ac2a136bded1e5420f77dab
---
M fe/src/main/java/org/apache/impala/catalog/events/MetastoreEvents.java
M tests/custom_cluster/test_events_custom_configs.py
2 files changed, 53 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/59/23159/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ie3e9a99b666a1c928ac2a136bded1e5420f77dab
Gerrit-Change-Number: 23159
Gerrit-PatchSet: 1
Gerrit-Owner: Sai Hemanth Gantasala <saihema...@cloudera.com>

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