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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7192) DN should ignore lazyPersist hint if the writer is not local
Date Thu, 30 Jul 2015 20:16:05 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arpit Agarwal updated HDFS-7192:
--------------------------------
    Attachment: HDFS-7192.05.patch

Thanks for the review [~xyao].

The Jenkins test failure is unrelated. The v05 patch fixes the checkstyle issue by renaming
the parameter. I will commit the v05 patch shortly.


Delta wrt v04 patch.
{code}
-      final DataNode datanode, DataChecksum requestedChecksum,
+      final DataNode dn, DataChecksum requestedChecksum,
       CachingStrategy cachingStrategy,
       final boolean allowLazyPersist,
       final boolean pinning) throws IOException {
     return new BlockReceiver(block, storageType, in,
         inAddr, myAddr, stage, newGs, minBytesRcvd, maxBytesRcvd,
-        clientname, srcDataNode, datanode, requestedChecksum,
+        clientname, srcDataNode, dn, requestedChecksum,
{code}

> DN should ignore lazyPersist hint if the writer is not local
> ------------------------------------------------------------
>
>                 Key: HDFS-7192
>                 URL: https://issues.apache.org/jira/browse/HDFS-7192
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-7192.01.patch, HDFS-7192.02.patch, HDFS-7192.03.patch, HDFS-7192.04.patch,
HDFS-7192.05.patch
>
>
> The DN should ignore {{allowLazyPersist}} hint to {{DataTransferProtocol#writeBlock}}
if the writer is not local.
> Currently we don't restrict memory writes to local clients. For in-cluster clients this
is not an issue as single replica writes default to the local DataNode. But clients outside
the cluster can still send this hint.



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