Wei-Chiu Chuang created HDFS-12293:
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Summary: DataNode should log file name on disk error
Key: HDFS-12293
URL: https://issues.apache.org/jira/browse/HDFS-12293
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Reporter: Wei-Chiu Chuang
Found the following error message in precommit build
https://builds.apache.org/job/hadoop-qbt-trunk-java8-linux-x86/488/testReport/junit/org.apache.hadoop.hdfs.server.datanode/TestDataNodeVolumeFailureReporting/testSuccessiveVolumeFailures/
{noformat}
2017-08-10 09:36:53,619 [DataXceiver for client
DFSClient_NONMAPREDUCE_670847838_18 at /127.0.0.1:55851 [Receiving block
BP-219227751-172.17.0.2-1502357801473:blk_1073741829_1005]] WARN
datanode.DataNode (BlockReceiver.java:<init>(287)) - IOException in
BlockReceiver constructor. Cause is
java.io.IOException: Not a directory
at java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(File.java:1012)
at
org.apache.hadoop.hdfs.server.datanode.FileIoProvider.createFile(FileIoProvider.java:302)
at
org.apache.hadoop.hdfs.server.datanode.DatanodeUtil.createFileWithExistsCheck(DatanodeUtil.java:69)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.createRbwFile(BlockPoolSlice.java:306)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.createRbwFile(FsVolumeImpl.java:933)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.createRbw(FsVolumeImpl.java:1202)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.createRbw(FsDatasetImpl.java:1356)
at
org.apache.hadoop.hdfs.server.datanode.BlockReceiver.<init>(BlockReceiver.java:215)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.getBlockReceiver(DataXceiver.java:1291)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:758)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:173)
at
org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:107)
at
org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:290)
{noformat}
It is not known what file was being created.
What's interesting is that {{DatanodeUtil#createFileWithExistsCheck}} does
carry file name in its log message, but the exception handler at
{{DataTransfer#run()}} and {{BlockReceiver#BlockReceiver}} ignores it:
{code:title=BlockReceiver#BlockReceiver}
// check if there is a disk error
IOException cause = DatanodeUtil.getCauseIfDiskError(ioe);
DataNode.LOG.warn("IOException in BlockReceiver constructor"
+ (cause == null ? "" : ". Cause is "), cause);
if (cause != null) {
ioe = cause;
// Volume error check moved to FileIoProvider
}
{code}
The logger should print the file name in addition to the cause.
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