Arpit Agarwal created HDFS-11086:
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Summary: DataNode disk check improvements
Key: HDFS-11086
URL: https://issues.apache.org/jira/browse/HDFS-11086
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Arpit Agarwal
Assignee: Arpit Agarwal
This Jira tracks a few improvements to DataNode’s usage of DiskChecker to
address the following problems:
# Checks are serialized so a single slow disk can indefinitely delay checking
the rest.
# Related to 1, no detection of stalled checks.
# Lack of granularity. A single IO error initiates checking all disks.
# Inconsistent activation. Some DataNode IO failures trigger disk checks but
not all.
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