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https://issues.apache.org/jira/browse/IMPALA-10637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17317479#comment-17317479
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ASF subversion and git services commented on IMPALA-10637:
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Commit 5d307cbb7b2ec3432bebd7759b0bcebf54a6cc22 in impala's branch
refs/heads/master from Sourabh Goyal
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=5d307cb ]
IMPALA-10637: Fixes bug in ValidWriteIdList comparison
For a transactional table, catalogd compares previous and current ValidWriteList
to determine more recent version out of the two and reloads table cache
accordingly.
Because of a bug in ValidWriteIdList comparison, catalogD was not refreshing
table
metadata in the cache with more recent changes. As a result of which we were
seeing
inconsistencies in read after write into the table.
Tested by
1. Adding a unit test to compare WriteIDLists.
Change-Id: Idaa4bcdbda1757a6451122efc505d1d483c879cc
Reviewed-on: http://gerrit.cloudera.org:8080/17276
Reviewed-by: Sourabh Goyal <[email protected]>
Reviewed-by: Vihang Karajgaonkar <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Bug in ValidWriteIdList comparison in AcidUtils
> -----------------------------------------------
>
> Key: IMPALA-10637
> URL: https://issues.apache.org/jira/browse/IMPALA-10637
> Project: IMPALA
> Issue Type: Bug
> Components: Catalog
> Reporter: Sourabh Goyal
> Priority: Major
>
> There is a bug in
> [this|https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/util/AcidUtils.java#L752]
> line of code in AcidUtils.java.
> Example scenario:
> For validWriteIdLists:
> ValidWriteIdList a = new ValidReaderWriteIdList("default.test:1:1:1:");
> ValidWriteIdList b = new
> ValidReaderWriteIdList("default.test:1:9223372036854775807::");
> AcidUtils.compare(a, b) currently returns +1 whereas the expected answer is
> -1 since b is more recent.
> cc - [~kishendas] [~vihangk1]
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