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https://issues.apache.org/jira/browse/HDFS-2176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068305#comment-13068305
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Uma Maheswara Rao G commented on HDFS-2176:
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Hi Denny,
Did you get this issue in your cluster?
This peice of Code moved to NNStorage.java in latest trunk.
By seeing the peice of code, i did not find the issue.
Because after removing the element he is breaking from the loop. So it will not
try to pick the next element right.
Correct me if i understood your issue wrongly.
-Thanks.
> Avoid ConcurrentModificationException when FSImage initialization
> -----------------------------------------------------------------
>
> Key: HDFS-2176
> URL: https://issues.apache.org/jira/browse/HDFS-2176
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 0.21.0
> Reporter: Denny Ye
> Priority: Minor
> Labels: FSImage
>
> Below code may cause ConcurrentModificationException when some of fsimage
> directory equals editlog directory :
> Method: FSImage.setStorageDirectories(Collection<URI> fsNameDirs,
> Collection<URI> fsEditsDirs)
> Code:
> for (URI dirName : fsNameDirs) {
> ...
> boolean isAlsoEdits = false;
> for (URI editsDirName : fsEditsDirs) {
> if (editsDirName.compareTo(dirName) == 0) {
> isAlsoEdits = true;
> fsEditsDirs.remove(editsDirName);
> break;
> }
> }
> }
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