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From "Cosmin Lehene (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3706) On node crash (RS+DN), the replication of blocks can up latency
Date Wed, 07 Jan 2015 15:25:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267737#comment-14267737
] 

Cosmin Lehene commented on HBASE-3706:
--------------------------------------

[~saint.ack@gmail.com] HDFS-1195 is stale... I'm assuming the same behavior still applies?
Would it make sense to refresh this?

> On node crash (RS+DN), the replication of blocks can up latency
> ---------------------------------------------------------------
>
>                 Key: HBASE-3706
>                 URL: https://issues.apache.org/jira/browse/HBASE-3706
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>
> HDFS is kinda dumb regards rereplication in that if it notices missing replicas, its
crass in the way it goes about making redress; there is no facility for limiting the rate
of rereplication (HDFS-1195).  We've seen the case where hdfs is rereplicating at such a rate
after DN crash, it fills the network hampering data serving.  This issue is about noting this
prob. and helping out/keeping an eye on HDFS-1195.



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