liupengcheng created SPARK-26712:
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Summary: Disk broken caused NM recovery failure causing
YarnShuffleSerivce not available
Key: SPARK-26712
URL: https://issues.apache.org/jira/browse/SPARK-26712
Project: Spark
Issue Type: Improvement
Components: Shuffle
Affects Versions: 2.4.0, 2.1.0
Reporter: liupengcheng
Currently, `ExecutorShuffleInfo` can be recovered from file if NM recovery
enabled, however, the recovery file is under a fixed directory, which may be
unavailable if Disk broken. So if a NM restart happen(may be caused by kill or
some reason), the `ExecutorShuffleInfo` will lost, and causes the
shuffleservice unavailble even if there are executors on the node.
This may finally cause job failures(if node or executors on it not
blacklisted), or at least, it will cause resource waste.(shuffle from this node
always failed.)
For long running spark applications, this problem may be more serious.
So I think we should support multi directories(multi disk) for this recovery.
and change to good directory and when the disk of current directory is broken.
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