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https://issues.apache.org/jira/browse/HDFS-14440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16871626#comment-16871626
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Hudson commented on HDFS-14440:
-------------------------------
FAILURE: Integrated in Jenkins build Hadoop-trunk-Commit #16813 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/16813/])
HDFS-14440. RBF: Optimize the file write process in case of multiple (brahma:
rev 8e4267650fe52eb6b6d4466fc006e7af4a1326d0)
* (edit)
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java
> RBF: Optimize the file write process in case of multiple destinations.
> ----------------------------------------------------------------------
>
> Key: HDFS-14440
> URL: https://issues.apache.org/jira/browse/HDFS-14440
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Fix For: HDFS-13891
>
> Attachments: HDFS-14440-HDFS-13891-01.patch,
> HDFS-14440-HDFS-13891-02.patch, HDFS-14440-HDFS-13891-03.patch,
> HDFS-14440-HDFS-13891-04.patch, HDFS-14440-HDFS-13891-05.patch,
> HDFS-14440-HDFS-13891-06.patch
>
>
> In case of multiple destinations, We need to check if the file already exists
> in one of the subclusters for which we use the existing getBlockLocation()
> API which is by default a sequential Call,
> In an ideal scenario where the file needs to be created each subcluster shall
> be checked sequentially, this can be done concurrently to save time.
> In another case where the file is found and if the last block is null, we
> need to do getFileInfo to all the locations to get the location where the
> file exists. This also can be prevented by use of ConcurrentCall since we
> shall be having the remoteLocation to where the getBlockLocation returned a
> non null entry.
>
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