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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12349) Improve log message when it could not alloc enough blocks for EC
Date Mon, 11 Sep 2017 16:39:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16161547#comment-16161547
] 

Chris Douglas commented on HDFS-12349:
--------------------------------------

bq. Verified that all failed tests are not related
The failed tests are related. For example, [TestSaslDataTransfer|https://builds.apache.org/job/PreCommit-HDFS-Build/21039/testReport/org.apache.hadoop.hdfs.protocol.datatransfer.sasl/TestSaslDataTransfer/testServerSaslNoClientSasl/]
{noformat}
Expected output to match /could only be replicated to 0 nodes/ but got:
File /file1 could only be written to 0 of the 1 minReplication. There are 1 datanode(s) running
and 3 node(s) are excluded in this operation.
{noformat}

Please also fix the findbugs warning added in this patch.

> Improve log message when it could not alloc enough blocks for EC 
> -----------------------------------------------------------------
>
>                 Key: HDFS-12349
>                 URL: https://issues.apache.org/jira/browse/HDFS-12349
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: erasure-coding
>    Affects Versions: 3.0.0-alpha3
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>            Priority: Minor
>             Fix For: 3.0.0-beta1
>
>         Attachments: HDFS-12349.00.patch, HDFS-12349.01.patch, HDFS-12349.02.patch
>
>
> When an EC output stream could not alloc enough blocks for parity blocks, it sets the
warning.
> {code}
> if (blocks[i] == null) {
>         LOG.warn("Failed to get block location for parity block, index=" + i);
> {code}
> We should clarify the cause of this warning message.



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