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Date: Thu, 9 Aug 2012 08:59:19 +0000 (UTC)
From: "Uma Maheswara Rao G (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3734)
 TestFSEditLogLoader.testReplicationAdjusted() will hang if number of blocks
 are more than one
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    [ https://issues.apache.org/jira/browse/HDFS-3734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13431683#comment-13431683 ] 

Uma Maheswara Rao G commented on HDFS-3734:
-------------------------------------------

Cause seems to be same as HDFS-3772 right? If Yes, then we can close one and mark as duplicate.
                
> TestFSEditLogLoader.testReplicationAdjusted() will hang if number of blocks are more than one
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3734
>                 URL: https://issues.apache.org/jira/browse/HDFS-3734
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.1.0-alpha, 3.0.0
>            Reporter: Vinay
>
> TestFSEditLogLoader.testReplicationAdjusted() which was added in HDFS-2003 will fail if number of blocks before cluster restart are more than one.
> Test Scenario:
> --------------
> 1. Write a file with min replication as 1 and replication factor as 1.
> 2. Change the min replication to 2 and restart the cluster.
> Expected: Min replication should be automatically reset on cluster restart by replicating more blocks.
> Currently, if the number of blocks before restart is only one, then on restart NN will not enter safemode, hence replication will happen and satisfies min replication factor.
> If initial blocks count is more than 1 which are having replication factor as 1, then on restart NN will enter safemode and will never come out.

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