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From "Vitalii Tymchyshyn (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7294) FileUtil uses wrong stat command for FreeBSD
Date Mon, 16 May 2011 20:00:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034251#comment-13034251
] 

Vitalii Tymchyshyn commented on HADOOP-7294:
--------------------------------------------

Actually there is support for Windows and Mac in the code, so the thing to be changed is to
rename Mac to BSD and treat FreeBSD as BSD. In general, I'd prefer it to be configurable.

> FileUtil uses wrong stat command for FreeBSD
> --------------------------------------------
>
>                 Key: HADOOP-7294
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7294
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.21.0
>         Environment: FreeBSD 8.0-STABLE
>            Reporter: Vitalii Tymchyshyn
>
> I get next exception when try to use append:
> 2011-05-16 17:07:54,648 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(10.112.0.207:50010,
storageID=DS-1047171559-
> 10.112.0.207-50010-1302796304164, infoPort=50075, ipcPort=50020):DataXceiver
> java.io.IOException: Failed to get link count on file /var/data/hdfs/data/current/finalized/subdir26/subdir17/subdir55/blk_-1266943884751786595:
>  message=null; error=stat: illegal option -- c; exit value=1
>         at org.apache.hadoop.fs.FileUtil.createIOException(FileUtil.java:709)
>         at org.apache.hadoop.fs.FileUtil.access$000(FileUtil.java:42)
>         at org.apache.hadoop.fs.FileUtil$HardLink.getLinkCount(FileUtil.java:682)
>         at org.apache.hadoop.hdfs.server.datanode.ReplicaInfo.unlinkBlock(ReplicaInfo.java:215)
>         at org.apache.hadoop.hdfs.server.datanode.FSDataset.append(FSDataset.java:1116)
> It seems that FreeBSD is treated like UNIX and so calls 'stat -c%h', while FreeBSD is
much more like Mac (since they have same BSD roots):
> $ stat --help
> stat: illegal option -- -
> usage: stat [-FlLnqrsx] [-f format] [-t timefmt] [file ...]
> $ stat -f%l a_file
> 1

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