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Posted to yarn-issues@hadoop.apache.org by "Haibo Chen (JIRA)" <ji...@apache.org> on 2017/03/11 00:15:04 UTC
[jira] [Commented] (YARN-5071) address HBase compatibility issues
with trunk
[ https://issues.apache.org/jira/browse/YARN-5071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15905915#comment-15905915 ]
Haibo Chen commented on YARN-5071:
----------------------------------
[~sjlee0], [~vrushalic] this is filed a while ago, do you still see some existing compatibilities issues?
bq. Regarding #1, we have made some effort to isolate at least the unit tests (YARN-5045), but there is code for coprocessor and the schema creator. We probably need to isolate them (and its dependencies) so that they are managed against the old version of hadoop.
I believe we have decided not to isolate them in YARN-4985.
bq. #2 might not arise that often (hbase client mostly depends only on hadoop-common), it is also harder to fix once it happens.
We probably have to keep an eye on hadoop-common incompatibility changes that can break hbase-client and ask HBase to shade when the incompatible change is unavoidable ?
> address HBase compatibility issues with trunk
> ---------------------------------------------
>
> Key: YARN-5071
> URL: https://issues.apache.org/jira/browse/YARN-5071
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Sangjin Lee
> Priority: Critical
> Labels: YARN-5355
>
> The trunk is now adding or planning to add more and more backward-incompatible changes. Some examples include
> - remove v.1 metrics classes (HADOOP-12504)
> - update jersey version (HADOOP-9613)
> - target java 8 by default (HADOOP-11858)
> This poses big challenges for the timeline service v.2 as we have a dependency on hbase which depends on an older version of hadoop.
> We need to find a way to solve/contain/manage these risks before it is too late.
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