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https://issues.apache.org/jira/browse/HBASE-20214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16437895#comment-16437895
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Sean Busbey commented on HBASE-20214:
-------------------------------------
don't use commons-collections v3. You should use the commons-collection v4 API
that's been relocated in the hbase-thirdparty library.
FWIW, the description is here: [http://hbase.apache.org/book.html#thirdparty]
Basically, any class found in commons-collections4 should be present if you
prefix the package with {{org.apache.hbase.thirdparty}}, e.g.
{{org.apache.hbase.thirdparty.org.apache.commons.collections4.CollectionUtils}}.
> Review of RegionLocationFinder Class
> ------------------------------------
>
> Key: HBASE-20214
> URL: https://issues.apache.org/jira/browse/HBASE-20214
> Project: HBase
> Issue Type: Improvement
> Components: Balancer, master
> Affects Versions: 2.0.0
> Reporter: BELUGA BEHR
> Assignee: BELUGA BEHR
> Priority: Minor
> Attachments: HBASE-20214.1.patch, HBASE-20214.2.patch
>
>
> # Use SLF4J parameter logging
> # Remove superfluous code
> # Replace code with re-usable libraries where possible
> # Use different data structure
> # Small perf improvements
> # Fix some checkstyle
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