Multiop submitted to non-leader always fails due to timeout
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Key: ZOOKEEPER-1124
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1124
Project: ZooKeeper
Issue Type: Bug
Components: server
Affects Versions: 3.4.0
Environment: all
Reporter: Marshall McMullen
Priority: Critical
Fix For: 3.4.0
The new Multiop support added under zookeeper-965 fails every single time if
the multiop is submitted to a non-leader in quorum mode. In standalone mode it
always works properly and this bug only presents itself in quorum mode (with 2
or more nodes). After 12 hours of debugging (*sigh*) it turns out to be a
really simple fix. There are a couple of missing case statements inside
FollowerRequestProcessor.java and ObserverRequestProcessor.java to ensure that
multiop is forwarded to the leader for commit. I've attached a patch that fixes
this problem.
It's probably worth nothing that zookeeper-965 has already been committed to
trunk. But this is a fatal flaw that will prevent multiop support from working
properly and as such needs to get committed to 3.4.0 as well. Is there a way to
tie these two cases together in some way?
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