[jira] Commented: (HBASE-1124) Balancer kicks in way too early

["Andrew Purtell (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-1124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12663259#action_12663259 ] 

Andrew Purtell commented on HBASE-1124:
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In some tests, I observed that master did not respond in time to a heartbeat from the HRS carrying META, so it would reinitialize. Master would then try to update META from ProcessRegionOpen but update would fail (processBatchOfRows complains about HRS assigned to META not accepting writes). Observed warnings about META being partially offline. This was a terminal state. 

> Balancer kicks in way too early
> -------------------------------
>
>                 Key: HBASE-1124
>                 URL: https://issues.apache.org/jira/browse/HBASE-1124
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: Andrew Purtell
>             Fix For: 0.19.0
>
>
> Balancer kicks in before all regions are assigned out. Causes confusion. Master won't accept OPENs from "overloaded" HRS. Master is slow to respond to UI and HRS during. Master sometimes takes too long to respond to a HRS heartbeat and so the HRS will reinit. This causes more confusion.

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