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https://issues.apache.org/jira/browse/CURATOR-168?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
zhaogang updated CURATOR-168:
-----------------------------
Description:
We use LeaderLatch for leader election within our several zookeeper clients,but
sometimes our leaderLatch stopped to work due to a error "Background exception
was not retry-able or retry gave up java.lang.IllegalArgumentException: Path
must start with / characte".
To found the reason we tracked the execution of program in class LeaderLatch
with debug mode,we found the code "setNode(event.getName());" in line 487 of
LeaderLatch.class in which "event.getName()" code sometimes didn't return the
full path of the znode but only return the last part of the full path,like
"_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068", but the full path
should be
"/api1/leaders/_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068".
So the when
event.getName()=="_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068",
the program will fail to go through the codes below:
1.LeaderLatch.checkLeadership() line 526
2.ZKPaths.getNodeFromPath() line 61
3.PathUtils.validatePath(path) line 46
And then the LeaderLatch stopped to work.
was:
We use LeaderLatch for leader election within our several zookeeper clients,but
sometimes our leaderLatch stopped to work due to a error "Background exception
was not retry-able or retry gave up java.lang.IllegalArgumentException: Path
must start with / characte".
To found the reason we tracked the execution of program in class LeaderLatch
with debug mode,we found the code "setNode(event.getName());" in line 487 of
LeaderLatch.class in which "event.getName()" code sometimes didn't return the
full path of the znode but only return the last part of the full path,like
"_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068", but the full path
should be
"api1/leaders/_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068".
So the when
event.getName()=="_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068",
the program will fail to go through the codes below:
1.LeaderLatch.checkLeadership() line 526
2.ZKPaths.getNodeFromPath() line 61
3.PathUtils.validatePath(path) line 46
And then the LeaderLatch stopped to work.
> Error 'Path must start with / character' caused by code
> 'setNode(event.getName());' in line 487 of LeaderLatch.class source file in
> which 'event.getName()' sometimes only return the last part of znode path
> instead of the full path.
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CURATOR-168
> URL: https://issues.apache.org/jira/browse/CURATOR-168
> Project: Apache Curator
> Issue Type: Bug
> Components: Recipes
> Affects Versions: 2.7.0
> Environment: operating system:ubuntu
> Reporter: zhaogang
> Priority: Blocker
> Fix For: 3.0.0, 2.7.1
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> We use LeaderLatch for leader election within our several zookeeper
> clients,but sometimes our leaderLatch stopped to work due to a error
> "Background exception was not retry-able or retry gave up
> java.lang.IllegalArgumentException: Path must start with / characte".
> To found the reason we tracked the execution of program in class LeaderLatch
> with debug mode,we found the code "setNode(event.getName());" in line 487 of
> LeaderLatch.class in which "event.getName()" code sometimes didn't return the
> full path of the znode but only return the last part of the full path,like
> "_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068", but the full path
> should be
> "/api1/leaders/_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068".
> So the when
> event.getName()=="_c_b1097329-4a77-493b-806c-5c888067eeab-latch-0000004068",
> the program will fail to go through the codes below:
> 1.LeaderLatch.checkLeadership() line 526
> 2.ZKPaths.getNodeFromPath() line 61
> 3.PathUtils.validatePath(path) line 46
> And then the LeaderLatch stopped to work.
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