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From "Xiao Chen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11275) Check groupEntryIndex and throw a helpful exception on failures when removing ACL.
Date Tue, 27 Dec 2016 18:31:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiao Chen updated HDFS-11275:
-----------------------------
    Status: Patch Available  (was: Open)

> Check groupEntryIndex and throw a helpful exception on failures when removing ACL.
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-11275
>                 URL: https://issues.apache.org/jira/browse/HDFS-11275
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>         Attachments: HDFS-11275.01.patch
>
>
> We only have the logs to the exception but not the metadata, so hard to reproduce. The
log is:
> {noformat}
> ERROR org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader: Encountered exception on
operation org.apache.hadoop.hdfs.server.namenode.FSEditLogOp$SetAclOp@7aad3f7d 
> java.lang.IndexOutOfBoundsException: index (-4) must not be negative 
> at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:301) 
> at com.google.common.base.Preconditions.checkElementIndex(Preconditions.java:280) 
> at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:91) 
> at org.apache.hadoop.hdfs.server.namenode.AclStorage.removeINodeAcl(AclStorage.java:267)

> at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedRemoveAcl(FSDirectory.java:2720)

> at org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedSetAcl(FSDirectory.java:2737)

> at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:827)

> at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:231)

> at org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:140)

> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:846) 
> {noformat}
> Let's use this jira to add more information to the exception, to hopefully help the next
reoccurrence. (Have not failed again in the past week)



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