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From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9574) Reduce client failures during datanode restart
Date Tue, 22 Dec 2015 15:17:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15068237#comment-15068237
] 

Kihwal Lee commented on HDFS-9574:
----------------------------------

{noformat}
-------------------------------------------------------
 T E S T S
-------------------------------------------------------
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.server.datanode.TestBlockReplacement
Tests run: 4, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 29.643 sec - in org.apache.hadoop.hdfs.server.datanode.TestBlockReplacement
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.server.datanode.TestBlockScanner
Tests run: 12, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 50.741 sec - in org.apache.hadoop.hdfs.server.datanode.TestBlockScanner
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.server.namenode.TestBackupNode
Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 28.891 sec - in org.apache.hadoop.hdfs.server.namenode.TestBackupNode
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.server.namenode.TestNNThroughputBenchmark
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.523 sec - in org.apache.hadoop.hdfs.server.namenode.TestNNThroughputBenchmark
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache
Tests run: 11, Failures: 0, Errors: 0, Skipped: 6, Time elapsed: 1.102 sec - in org.apache.hadoop.hdfs.shortcircuit.TestShortCircuitCache
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=768m; support was removed
in 8.0
Running org.apache.hadoop.hdfs.TestDatanodeRegistration
Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 14.489 sec - in org.apache.hadoop.hdfs.TestDatanodeRegistration

Results :

Tests run: 39, Failures: 0, Errors: 0, Skipped: 6
{noformat}

> Reduce client failures during datanode restart
> ----------------------------------------------
>
>                 Key: HDFS-9574
>                 URL: https://issues.apache.org/jira/browse/HDFS-9574
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Kihwal Lee
>            Assignee: Kihwal Lee
>         Attachments: HDFS-9574.patch, HDFS-9574.v2.patch
>
>
> Since DataXceiverServer is initialized before BP is fully up, client requests will fail
until the datanode registers.



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