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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1549) All remaining UTF8 data structures in HDFS code should be removed
Date Thu, 17 Apr 2008 07:25:21 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589850#action_12589850
] 

Edward J. Yoon commented on HADOOP-1549:
----------------------------------------

{code}
org.apache.hadoop.dfs.TestDFSUpgradeFromImage.testUpgradeFromImage
org.apache.hadoop.dfs.TestDistributedUpgrade.testDistributedUpgrade 

java.lang.OutOfMemoryError: Requested array size exceeds VM limit
	at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:796)
	at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:711)
	at org.apache.hadoop.dfs.FSImage.doUpgrade(FSImage.java:303)
	at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:270)
	at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:81)
	at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:274)
	at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:255)
	at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:133)
	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:178)
	at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:164)
	at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:782)
	at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:264)
	at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:162)
	at org.apache.hadoop.dfs.TestDFSUpgradeFromImage.testUpgradeFromImage(TestDFSUpgradeFromImage.java:185)

{code}

Upgrade test failed. Is problem related with UTF8 remove?


> All remaining UTF8 data structures in HDFS code should be removed
> -----------------------------------------------------------------
>
>                 Key: HADOOP-1549
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1549
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>            Reporter: dhruba borthakur
>            Assignee: Edward J. Yoon
>             Fix For: 0.18.0
>
>         Attachments: 1549.patch
>
>
> The UTF8 data structure is deprecated. HADOOP-1283 addressed part of the problem. All
remaining UTF8 data structurs in HDFS should be removed.

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