ludun created HDFS-15774:
----------------------------
Summary: DataNode DiskChecker treat all IOExeption as check failed
Key: HDFS-15774
URL: https://issues.apache.org/jira/browse/HDFS-15774
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 3.1.4
Reporter: ludun
Assignee: ludun
DataNode DiskChecker treat all IOExeption as check failed. But some
IOException like "too many open files" or "can not create new thread" is not
about volume health state.
{code:java}
2021-01-11 19:17:10,751 | WARN | Thread-121065 | Removing failed volume
/srv/BigData/hadoop/data17/dn/current: | FsVolumeList.java:247
org.apache.hadoop.util.DiskChecker$DiskErrorException: Directory is not
writable:
/srv/BigData/hadoop/data17/dn/current/BP-197188276-xxxxxxxx-1525514126952/current/finalized
at
org.apache.hadoop.util.DiskChecker.checkAccessByRWFile(DiskChecker.java:235)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.checkDirs(BlockPoolSlice.java:346)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.checkDirs(FsVolumeImpl.java:938)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList.checkDirs(FsVolumeList.java:245)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.checkDataDir(FsDatasetImpl.java:2234)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.checkDiskError(DataNode.java:3537)
at
org.apache.hadoop.hdfs.server.datanode.DataNode.access$900(DataNode.java:254)
at
org.apache.hadoop.hdfs.server.datanode.DataNode$8.run(DataNode.java:3571)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.IOException: Too many open files
at java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.io.File.createNewFile(File.java:1012)
at
org.apache.hadoop.util.DiskChecker.checkAccessByRWFile(DiskChecker.java:232)
... 8 more
{code}
we should treat IOExcption more precisely.
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