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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-5455) NN needs to update storageMap on first heartbeat
Date Mon, 04 Nov 2013 21:50:19 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5455?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal resolved HDFS-5455.
---------------------------------

       Resolution: Fixed
    Fix Version/s: Heterogeneous Storage (HDFS-2832)

Thanks Nicholas! Committed this to branch HDFS-2832.

> NN needs to update storageMap on first heartbeat
> ------------------------------------------------
>
>                 Key: HDFS-5455
>                 URL: https://issues.apache.org/jira/browse/HDFS-5455
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>    Affects Versions: Heterogeneous Storage (HDFS-2832)
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>             Fix For: Heterogeneous Storage (HDFS-2832)
>
>         Attachments: h5455.01.patch
>
>
> Currently the NN updates {{DatanodeDescriptor#storageMap}} while processing block reports
but not from heartbeats. This results in the {{DatanodeStorageInfo#blockContentsStale}} being
stale even after the first heartbeat is received.
> {code}
>   void receivedBlockReport() {
>     if (heartbeatedSinceFailover) {
>       blockContentsStale = false;
> {code}
> We need to update storageMap if we see a new storage ID in a heartbeart.



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