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https://issues.apache.org/jira/browse/HBASE-16133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364744#comment-15364744
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Francis Liu commented on HBASE-16133:
-------------------------------------
Sorry just got to this. Good catch.
> RSGroupBasedLoadBalancer.retainAssignment() might miss a region
> ---------------------------------------------------------------
>
> Key: HBASE-16133
> URL: https://issues.apache.org/jira/browse/HBASE-16133
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Fix For: 2.0.0
>
> Attachments: hbase-16133_v1.patch
>
>
> We have seen in the tests through the IntegrationTestRSGroup that we may miss
> assigning a region.
> It is a simple logic error here:
> {code}
> if (server != null && !assignments.containsKey(server)) {
> assignments.put(server, new ArrayList<HRegionInfo>());
> } else if (server != null) {
> assignments.get(server).add(region);
> } else {
> {code}
> in the first condition, we are not adding the region to the newly created
> ArrayList.
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