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https://issues.apache.org/jira/browse/HBASE-20555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16497213#comment-16497213
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Andrew Purtell edited comment on HBASE-20555 at 5/31/18 9:31 PM:
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[~zyork] No concerns, provided
* The API checker does not flag the changes as incompatible
* The defaults preserve as close as possible the current behavior (e.g. if
replacing a single threaded process with one that can use a configurable number
of threads, set the default to 1 thread)
An amendment to a branch-1.4 commit that changes a default is fine.
was (Author: apurtell):
[~zyork] No concerns, provided
* The API checker does not flag the changes as incompatible
* The defaults preserve as close as possible the current behavior (e.g. if
replacing a single threaded process with one that can use a configurable number
of threads, set the default to 1 thread)
> Backport HBASE-18083 and related changes in branch-1
> ----------------------------------------------------
>
> Key: HBASE-20555
> URL: https://issues.apache.org/jira/browse/HBASE-20555
> Project: HBase
> Issue Type: Umbrella
> Components: HFile, snapshots
> Affects Versions: 1.4.4, 1.4.5
> Reporter: Tak Lon (Stephen) Wu
> Assignee: Tak Lon (Stephen) Wu
> Priority: Major
>
> This will be the umbrella JIRA for backporting HBASE-18083 of `Make
> large/small file clean thread number configurable in HFileCleaner` from
> HBase's branch-2 to HBase's branch-1 that will needs a total of 4 sub-tasks
> that backport HBASE-16490, HBASE-17215, HBASE-17854 and then HBASE-18083
> The goal is to improve HFile cleaning performance that has been introduced in
> branch-2
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