Janus Chow created HDFS-15801:
---------------------------------
Summary: Backport HDFS-14582 to branch-2.10 (Failed to start DN
with ArithmeticException when NULL checksum used)
Key: HDFS-15801
URL: https://issues.apache.org/jira/browse/HDFS-15801
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Janus Chow
In HDFS-14582, the error message is more clear as follows:
{code:java}
Caused by: java.lang.ArithmeticException: / by zero
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.validateIntegrityAndSetLength(BlockPoolSlice.java:823)
at
{code}
But in branch-2.10.1, the exception message is omitted as follows:
{code:java}
2021-01-29 14:20:30,694 INFO impl.FsDatasetImpl (FsVolumeList.java:run(204)) -
Caught exception while adding replicas from /mnt/disk/0/hdfs/data/current. Will
throw later.
java.io.IOException: Failed to start sub tasks to add replica in replica map
:java.lang.ArithmeticExceptionjava.io.IOException: Failed to start sub tasks to
add replica in replica map :java.lang.ArithmeticException at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.getVolumeMap(BlockPoolSlice.java:434)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.getVolumeMap(FsVolumeImpl.java:930)
at
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList$1.run(FsVolumeList.java:196)
{code}
The specific error message is omitted, causing it harder to find the root cause.
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