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https://issues.apache.org/jira/browse/YARN-7919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16367485#comment-16367485
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Haibo Chen commented on YARN-7919:
----------------------------------
Good catch, [~rohithsharma]! The jcodings problem is more of a dependency
divergence rather than a compilation issue, in my opinion. I greped its usage
in hbase-client (2.0) module, here is what I found.
{code:java}
grep "org.jcodings.*" -R hbase-client
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RegexStringComparator.java:30:import
org.jcodings.Encoding;
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RegexStringComparator.java:31:import
org.jcodings.EncodingDB;
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RegexStringComparator.java:32:import
org.jcodings.specific.UTF8Encoding;
Binary file
hbase-client/target/classes/org/apache/hadoop/hbase/filter/RegexStringComparator$JoniRegexEngine.class
matches {code}
Looks like hbase-client relies on Jruby's joni regex engine to do pattern
matching. I am not sure if it is safe to just exclude jcondings to work around
the dependency divergence problem.
Alternatively, we could either report to and ask HBase community so that they
enforce the same version of jcodings in hbase-client, or override jcodings
version explicitly in timelineservice modules. The override is only necessary
in hbase 2.0, so the explicit dependency on jcodings is going to be in a maven
profile. I think we should do both, do the override as a safe work around to
unblock YARN-7346, but also file an HBase issue so that it can be properly
addressed. Thoughts?
Will address your hbase-schema > hbase-common comment when we decide what to do
with the jcondings issue.--
dfasfdas
> Split timelineservice-hbase module to make YARN-7346 easier
> -----------------------------------------------------------
>
> Key: YARN-7919
> URL: https://issues.apache.org/jira/browse/YARN-7919
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineservice
> Affects Versions: 3.0.0
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Priority: Major
> Attachments: YARN-7919.00.patch, YARN-7919.01.patch,
> YARN-7919.02.patch, YARN-7919.03.patch, YARN-7919.04.patch
>
>
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