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https://issues.apache.org/jira/browse/HBASE-18058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allan Yang updated HBASE-18058:
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Attachment: HBASE-18058.v2.patch
> Zookeeper retry sleep time should have a up limit
> -------------------------------------------------
>
> Key: HBASE-18058
> URL: https://issues.apache.org/jira/browse/HBASE-18058
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0, 1.4.0
> Reporter: Allan Yang
> Assignee: Allan Yang
> Attachments: HBASE-18058-branch-1.patch,
> HBASE-18058-branch-1.v2.patch, HBASE-18058.patch, HBASE-18058.v2.patch
>
>
> Now, in {{RecoverableZooKeeper}}, the retry backoff sleep time grow
> exponentially, but it doesn't have any up limit. It directly lead to a long
> long recovery time after Zookeeper going down for some while and come back.
> A case of damage done by high sleep time:
> If the server hosting zookeeper is disk full, the zookeeper quorum won't
> really went down but reject all write request. So at HBase side, new zk write
> request will suffers from exception and retry. But connection remains so the
> session won't timeout. When disk full situation have been resolved, the
> zookeeper quorum can work normally again. But the very high sleep time cause
> some module of RegionServer/HMaster will still sleep for a long time(for
> example, the balancer) before working.
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