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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Jira)" <ji...@apache.org> on 2020/08/24 13:07:00 UTC
[jira] [Commented] (HADOOP-17130) Configuration.getValByRegex()
shouldn't update the results while fetching.
[ https://issues.apache.org/jira/browse/HADOOP-17130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17183259#comment-17183259 ]
Steve Loughran commented on HADOOP-17130:
-----------------------------------------
oops, didn't push up my 3.2 patch. fixed
> Configuration.getValByRegex() shouldn't update the results while fetching.
> --------------------------------------------------------------------------
>
> Key: HADOOP-17130
> URL: https://issues.apache.org/jira/browse/HADOOP-17130
> Project: Hadoop Common
> Issue Type: Bug
> Components: common
> Affects Versions: 3.1.3
> Reporter: Mukund Thakur
> Assignee: Mukund Thakur
> Priority: Major
> Fix For: 3.2.2, 3.3.1, 3.1.5
>
>
> We have seen this stacktrace while using ABFS file system. After analysing the stack trace we can see that getValByRegex() is reading the properties and substituting the value in the same call. This may cause the ConcurrentModificationException.
> {code:java}
> Caused by: java.util.concurrent.ExecutionException: java.util.ConcurrentModificationException at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.generateSplitsInfo(OrcInputFormat.java:1877) ... 18 more Caused by: java.util.ConcurrentModificationException at java.util.Hashtable$Enumerator.next(Hashtable.java:1387) at org.apache.hadoop.conf.Configuration.getValByRegex(Configuration.java:3855) at org.apache.hadoop.fs.azurebfs.AbfsConfiguration.validateStorageAccountKeys(AbfsConfiguration.java:689) at org.apache.hadoop.fs.azurebfs.AbfsConfiguration.<init>(AbfsConfiguration.java:237) at org.apache.hadoop.fs.azurebfs.AzureBlobFileSystemStore.<init>(AzureBlobFileSystemStore.java:154) at org.apache.hadoop.fs.azurebfs.AzureBlobFileSystem.initialize(AzureBlobFileSystem.java:113) at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3396) at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:158) at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3456) at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3424) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:518) at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
>
> {code}
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