Hello Qifan Chen, Vihang Karajgaonkar, Csaba Ringhofer, Impala Public Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/16392
to look at the new patch set (#9).
Change subject: IMPALA-10075: Reuse unchanged partition instances
......................................................................
IMPALA-10075: Reuse unchanged partition instances
Currently, we always update the partition instance when we reload a
partition. If a partition remains the same after reloading, we should
reuse the old partition instance. So we won't send redundant updates on
these partitions. This reduces the size of the catalog topic update.
When a huge table is REFRESHed, catalogd only propagates the changed
partitions.
Tests:
- Add tests to verify that partition instances are reused after some
DDL/DMLs.
Change-Id: I2dd645c260d271291021e52fdac4b74924df1170
---
M fe/src/main/java/org/apache/impala/catalog/FileMetadataLoader.java
M fe/src/main/java/org/apache/impala/catalog/HdfsPartition.java
M fe/src/main/java/org/apache/impala/catalog/HdfsTable.java
M fe/src/main/java/org/apache/impala/catalog/ParallelFileMetadataLoader.java
A tests/metadata/test_reuse_partitions.py
5 files changed, 198 insertions(+), 16 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/92/16392/9
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I2dd645c260d271291021e52fdac4b74924df1170
Gerrit-Change-Number: 16392
Gerrit-PatchSet: 9
Gerrit-Owner: Quanlong Huang <huangquanl...@gmail.com>
Gerrit-Reviewer: Csaba Ringhofer <csringho...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Qifan Chen <qc...@cloudera.com>
Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com>
Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com>
