Tsz-wo Sze created HDDS-15052:
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Summary: HDDS-14040 may cause data loss
Key: HDDS-15052
URL: https://issues.apache.org/jira/browse/HDDS-15052
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Datanode
Reporter: Tsz-wo Sze
Assignee: Sumit Agrawal
HDDS-14040 changed ContainerStateMachine.writeStateMachineData(..) from
throwing an exception to returning a ContainerCommandResponseProto. As a
result, if there is an exception such as disk-out-of-space, the underlying
problem is ignored. This could cause silent data loss since failed transactions
can be returned success to clients.
HDDS-12151 is a related JIRA having a similar change, although it may or may
not cause data loss.
The correct fix is to change applyTransaction(..) to detect if
writeStateMachineData(..) has succeeded. If writeStateMachineData(..) has
failed, applyTransaction(..) should
# stop committing it to rocksdb,
# complete the future exceptionally such that the exception will be returned
to client, and
# shut down the server/pipeline if the failure cannot be recovered.
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