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https://issues.apache.org/jira/browse/ZOOKEEPER-3881?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17151884#comment-17151884
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Enrico Olivelli commented on ZOOKEEPER-3881:
--------------------------------------------
Hi.
Your ZK version is very old.
Can you try to upgrade to latest version 3.6.1 or at least 3.5.8 (that version
is supported by your version of Curator)
> 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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