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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12971) Replication stuck due to large default value for replication.source.maxretriesmultiplier
Date Tue, 10 Feb 2015 04:35:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14313545#comment-14313545
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Lars Hofhansl commented on HBASE-12971:
---------------------------------------

Yeah, this is bad!
What's the rationale for squaring the retry multiplier for socket timeouts? I can see maybe
doubling it.

Does anybody disagree with that? If not, I'll change the logic to double max retries for socket
timeouts instead of squaring.


> Replication stuck due to large default value for replication.source.maxretriesmultiplier
> ----------------------------------------------------------------------------------------
>
>                 Key: HBASE-12971
>                 URL: https://issues.apache.org/jira/browse/HBASE-12971
>             Project: HBase
>          Issue Type: Bug
>          Components: hbase
>    Affects Versions: 1.0.0, 0.98.10
>            Reporter: Adrian Muraru
>
> We are setting in hbase-site the default value of 300 for {{replication.source.maxretriesmultiplier}}
introduced in HBASE-11964.
> While this value works fine to recover for transient errors with remote ZK quorum from
the peer Hbase cluster - it proved to have side effects in the code introduced in HBASE-11367
Pluggable replication endpoint, where the default is much lower (10).
> See:
> 1. https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSource.java#L169
> 2. https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/HBaseInterClusterReplicationEndpoint.java#L79
> The the two default values are definitely conflicting - when {{replication.source.maxretriesmultiplier}}
is set in the hbase-site to 300 this will lead to a  sleep time of 300*300 (25h!) when a sockettimeout
exception is thrown.



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