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https://issues.apache.org/jira/browse/HDFS-3626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13410589#comment-13410589
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Todd Lipcon commented on HDFS-3626:
-----------------------------------
Not sure whether this affects the 1.0 branch as well, but I wouldn't be
surprised if it does.
IMO we need two fixes:
1) we should fix at the "write" side to properly canonicalize the path before
logging the operation
2) we should fix at the "read" side to canonicalize as well, so if someone ends
up with edit logs from a prior version that have this issue, they could upgrade
to repair the cluster.
> Creating file with invalid path can corrupt edit log
> ----------------------------------------------------
>
> Key: HDFS-3626
> URL: https://issues.apache.org/jira/browse/HDFS-3626
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Affects Versions: 2.0.0-alpha
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Blocker
>
> Joris Bontje reports the following:
> The following command results in a corrupt NN editlog (note the double slash
> and reading from stdin):
> $ cat /usr/share/dict/words | hadoop fs -put -
> hdfs://localhost:8020//path/file
> After this, restarting the namenode will result into the following fatal
> exception:
> {code}
> 2012-07-10 06:29:19,910 INFO org.apache.hadoop.hdfs.server.namenode.FSImage:
> Reading
> /var/lib/hadoop-hdfs/cache/hdfs/dfs/name/current/edits_0000000000000000173-0000000000000000188
> expecting start txid #173
> 2012-07-10 06:29:19,912 ERROR
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader: Encountered exception
> on operation MkdirOp [length=0, path=/, timestamp=1341915658216,
> permissions=cloudera:supergroup:rwxr-xr-x, opCode=OP_MKDIR, txid=182]
> java.lang.ArrayIndexOutOfBoundsException: -1
> {code}
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