[HADOOP-7294] FileUtil uses wrong stat command for FreeBSD

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.21.0
• Fix Version/s: 2.0.3-alpha
• Component/s: fs
• Labels: BB2015-05-TBR freebsd

Environment

FreeBSD 8.0-STABLE

• Hadoop Flags: Reviewed
• Assignee: Unassigned
• Reporter: Vitalii Tymchyshyn
• Created: 16/May/11 15:07
• Updated: 28/Sep/15 20:58
• Resolved: 08/May/15 09:11

Description

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

Issue Links

• duplicates: HADOOP-8811 Compile hadoop native library in FreeBSD
• relates to: HADOOP-7680 TestHardLink fails on Mac OS X, when gnu stat is in path