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https://issues.apache.org/jira/browse/ZOOKEEPER-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17151941#comment-17151941
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FengGao edited comment on ZOOKEEPER-3881 at 7/6/20, 10:20 AM:
--------------------------------------------------------------
To Enrico Olivelli
Sorry, I think this problem may not be encountered after the upgrade, because
this problem is an occasional problem in the current version, we only
encountered it once, fortunately the log recorded the wrong location at that
time.
was (Author: gaofeng0147):
To Enrico Olivelli (it seems that i have no comment permission:()
Sorry, I think this problem may not be encountered after the upgrade, because
this problem is an occasional problem in the current version, we only
encountered it once, fortunately the log recorded the wrong location at that
time.
> org.apache.zookeeper.ZooKeeper.getData may throw NullPointerException when
> copyStat with null response stat.
> ------------------------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-3881
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3881
> Project: ZooKeeper
> Issue Type: Bug
> Components: java client
> Affects Versions: 3.4.13
> Environment: zookeeper-3.4.13
> Reporter: FengGao
> Priority: Critical
> Fix For: 3.4.15
>
>
> We use curator 4.2.0 and zookeeper 3.4.13 as client, when we call curator
> PathChildrenCache.start(), It calls Zookeeper.getData(), but getData throw an
> NPE, please help check is it an BUG? Thanks.
> "2020-07-02 00:17:31,697"
> [UTC:20200702T001731+0700]|Error||DeployWorkThread-6|CONFIG > Failed to watch
> config of unit:ae9224e172952800c3b7a,type:global_configuration.
> com.huawei.itpaas.config.sdk.service.ConfigurationService.doCommonConfigWatcher(ConfigurationService.java:999)"2020-07-02
> 00:17:31,697" [UTC:20200702T001731+0700]|Error||DeployWorkThread-6|CONFIG >
> Failed to watch config of
> unit:ae9224e172952800c3b7a,type:global_configuration.
> com.huawei.itpaas.config.sdk.service.ConfigurationService.doCommonConfigWatcher(ConfigurationService.java:999)java.lang.NullPointerException:
> null at org.apache.zookeeper.server.DataTree.copyStat(DataTree.java:253)
> ~[zookeeper-3.4.13.fixed.20200331.jar:3.4.13--1] at
> org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1226)
> ~[zookeeper-3.4.13.fixed.20200331.jar:3.4.13--1] at
> org.apache.curator.framework.imps.GetDataBuilderImpl$4.call(GetDataBuilderImpl.java:327)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.imps.GetDataBuilderImpl$4.call(GetDataBuilderImpl.java:316)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.connection.StandardConnectionHandlingPolicy.callWithRetry(StandardConnectionHandlingPolicy.java:64)
> ~[curator-client-4.2.0.jar:?] at
> org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:100)
> ~[curator-client-4.2.0.jar:?] at
> org.apache.curator.framework.imps.GetDataBuilderImpl.pathInForeground(GetDataBuilderImpl.java:313)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.imps.GetDataBuilderImpl.forPath(GetDataBuilderImpl.java:304)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.imps.GetDataBuilderImpl$2.forPath(GetDataBuilderImpl.java:145)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.imps.GetDataBuilderImpl$2.forPath(GetDataBuilderImpl.java:141)
> ~[curator-framework-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.recipes.cache.PathChildrenCache.internalRebuildNode(PathChildrenCache.java:633)
> ~[curator-recipes-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.recipes.cache.PathChildrenCache.rebuild(PathChildrenCache.java:335)
> ~[curator-recipes-4.2.0.jar:4.2.0] at
> org.apache.curator.framework.recipes.cache.PathChildrenCache.start(PathChildrenCache.java:304)
> ~[curator-recipes-4.2.0.jar:4.2.0] at
> com.huawei.itpaas.config.sdk.service.ConfigurationService.doCommonConfigWatcher(ConfigurationService.java:965)
> [com.huawei.itpaas.configservice.sdk-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.config.sdk.impl.ConfigPluginImpl.watchCommonGlobal(ConfigPluginImpl.java:383)
> [com.huawei.itpaas.configservice.sdk-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.plugin.configuration.support.ConfigMgmtImpl.watchFiles(ConfigMgmtImpl.java:374)
> [com.huawei.itpaas.agent.deploy.plugin-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.plugin.engine.commands.bind.BindCommand.watchFiles(BindCommand.java:196)
> [com.huawei.itpaas.agent.deploy.plugin-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.plugin.engine.commands.bind.BindCommand.importSchema(BindCommand.java:187)
> [com.huawei.itpaas.agent.deploy.plugin-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.plugin.engine.commands.bind.BindCommand.run(BindCommand.java:70)
> [com.huawei.itpaas.agent.deploy.plugin-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.plugin.engine.commands.bind.BindCommand.run(BindCommand.java:1)
> [com.huawei.itpaas.agent.deploy.plugin-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.engine.run.CommandRunner.runOneCommand(CommandRunner.java:246)
> [com.huawei.itpaas.agent.deploy.engine-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.engine.run.CommandRunner.access$1(CommandRunner.java:234)
> [com.huawei.itpaas.agent.deploy.engine-6.1.4-RELEASE.jar:?] at
> com.huawei.itpaas.agent.deploy.engine.run.CommandRunner$AsyncScheduler.run(CommandRunner.java:198)
> [com.huawei.itpaas.agent.deploy.engine-6.1.4-RELEASE.jar:?] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> [?:1.8.0_242] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [?:1.8.0_242] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
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