GitHub user tillrohrmann opened a pull request:
https://github.com/apache/flink/pull/3446
[FLINK-5940] [checkpoint] Harden ZooKeeperCompletedCheckpointStore.recover
method
Before ZooKeeperCompletedCheckpointStore only tried to recover the latest
completed
checkpoint even though it might have read older checkpoint state handles
from
ZooKeeper. In order to deal with corrupted state handles, this commit
changes the
behaviour such that the completed checkpoint store adds all read retrievable
state handles from ZooKeeper and upon request of the latest checkpoint it
will
return the latest completed checkpoint which could be retrieved from the
state
handles. Broken state handles are removed from the completed checkpoint
store and
ZooKeeper.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tillrohrmann/flink fixCheckpointRecovery
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3446.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3446
----
commit e8fe16004562c012f15f2f1efc0ad45157fbb9dd
Author: Till Rohrmann <trohrm...@apache.org>
Date: 2017-03-01T13:08:35Z
[FLINK-5940] [checkpoint] Harden ZooKeeperCompletedCheckpointStore.recover
method
The ZooKeeperCompletedCheckpointStore only tries to recover the latest
completed
checkpoint even though it might have read older checkpoint state handles
from
ZooKeeper. In order to deal with corrupted state handles, this commit
changes the
behaviour such that the completed checkpoint store adds all read retrievable
state handles from ZooKeeper and upon request of the latest checkpoint it
will
return the latest completed checkpoint which could be retrieved from the
state
handles. Broken state handles are removed from the completed checkpoint
store and
ZooKeeper.
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