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https://issues.apache.org/jira/browse/HBASE-16685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15514740#comment-15514740
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Vladimir Rodionov commented on HBASE-16685:
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One handler blocked for hours is OK as long as we have 100 of them. I do not
see any issue here. I do not mind changing code if it is not a big one though.
Master does not have direct dependencies on M/R I think - only on backup
package.
> Revisit execution of SnapshotCopy in MapReduceBackupCopyService
> ---------------------------------------------------------------
>
> Key: HBASE-16685
> URL: https://issues.apache.org/jira/browse/HBASE-16685
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Labels: backup
>
> During code review of backup / restore, Matteo raised comment on the
> following code:
> {code}
> res = snapshotCp.run(options);
> {code}
> I think this will be a first time where HBase server has a direct dependency
> on a MR job.
> also we need to revisit this code to avoid having one handler blocked for N
> hours while we are doing a copy.
> This issue is to address the above comment.
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