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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5498) Improve datanode startup time
Date Wed, 20 Nov 2013 22:55:36 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13828245#comment-13828245
] 

Kihwal Lee commented on HDFS-5498:
----------------------------------

TestBalancerWithNodeGroup failure is not caused by this patch. TestDFSUpgrade failed because
the storage checksum comparison in the test does not take the cache file into account. It
is already skipping VERSION files, so it is simple matter of adding the cache file to the
blacklist.


> Improve datanode startup time
> -----------------------------
>
>                 Key: HDFS-5498
>                 URL: https://issues.apache.org/jira/browse/HDFS-5498
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-5498.with_du_change.patch, HDFS-5498.with_du_change.patch
>
>
> Similarly to HDFS-5027, an improvement  can be made for getVomeMap(). This is the phase
in which ReplicaMap.is populated.  But it will be even better if datanode scans only once
and do both.



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