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Posted to user@zookeeper.apache.org by Robin <rc...@163.com> on 2014/11/21 08:23:11 UTC
A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Hi,
In org.apache.zookeeper.ZooKeeper.ZKWatchManager#materialize(), even if the defaultWatcher is null, it is still be added into the Set and returned. This would cause a lot of annoying error log at org.apache.zookeeper.ClientCnxn.EventThread#processEvent as below:
2014-11-21 15:21:23,279 - ERROR - [main-EventThread:ClientCnxn$EventThread@524] - Error while calling watcher
java.lang.NullPointerException
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
It can be simply fixed by having a null check in ZKWatchManager.
Thanks!
Re:RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Posted by Robin <rc...@163.com>.
Sorry... I have just created https://issues.apache.org/jira/browse/ZOOKEEPER-2086
Later I will search the issues list before I create an issue.
在 2014-11-21 16:37:00，"Rakesh R" <ra...@huawei.com> 写道：
>Thanks Robin for reporting this. I could see a jira talking the same. Please have a look at this
>https://issues.apache.org/jira/browse/ZOOKEEPER-1875
>
>Regards,
>Rakesh
>-----Original Message-----
>From: Robin [mailto:rchzzjcn@163.com]
>Sent: 21 November 2014 14:00
>To: user@zookeeper.apache.org
>Subject: Re:RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
>
>OK, let me try it.
>
>
>
>
>
>
>
>
>在 2014-11-21 16:17:04，"Flavio Junqueira" <fp...@yahoo.com.INVALID> 写道：
>>Hi Robin,
>>
>>Could you create a jira and report it there, please? If you could provide a patch, even better.
>>
>>-Flavio
>>
>>-----Original Message-----
>>From: "Robin" <rc...@163.com>
>>Sent: 21/11/2014 07:23
>>To: "user@zookeeper.apache.org" <us...@zookeeper.apache.org>
>>Subject: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
>>
>>Hi,
>>In org.apache.zookeeper.ZooKeeper.ZKWatchManager#materialize(), even if the defaultWatcher is null, it is still be added into the Set and returned. This would cause a lot of annoying error log at org.apache.zookeeper.ClientCnxn.EventThread#processEvent as below:
>> 2014-11-21 15:21:23,279 - ERROR - [main-EventThread:ClientCnxn$EventThread@524] - Error while calling watcher
>> java.lang.NullPointerException
>> at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
>> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
>>
>>It can be simply fixed by having a null check in ZKWatchManager.
>>
>>Thanks!
RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Posted by Rakesh R <ra...@huawei.com>.
Thanks Robin for reporting this. I could see a jira talking the same. Please have a look at this
https://issues.apache.org/jira/browse/ZOOKEEPER-1875
Regards,
Rakesh
-----Original Message-----
From: Robin [mailto:rchzzjcn@163.com]
Sent: 21 November 2014 14:00
To: user@zookeeper.apache.org
Subject: Re:RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
OK, let me try it.
在 2014-11-21 16:17:04，"Flavio Junqueira" <fp...@yahoo.com.INVALID> 写道：
>Hi Robin,
>
>Could you create a jira and report it there, please? If you could provide a patch, even better.
>
>-Flavio
>
>-----Original Message-----
>From: "Robin" <rc...@163.com>
>Sent: 21/11/2014 07:23
>To: "user@zookeeper.apache.org" <us...@zookeeper.apache.org>
>Subject: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
>
>Hi,
>In org.apache.zookeeper.ZooKeeper.ZKWatchManager#materialize(), even if the defaultWatcher is null, it is still be added into the Set and returned. This would cause a lot of annoying error log at org.apache.zookeeper.ClientCnxn.EventThread#processEvent as below:
> 2014-11-21 15:21:23,279 - ERROR - [main-EventThread:ClientCnxn$EventThread@524] - Error while calling watcher
> java.lang.NullPointerException
> at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
>
>It can be simply fixed by having a null check in ZKWatchManager.
>
>Thanks!
Re:RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Posted by Robin <rc...@163.com>.
OK, let me try it.
在 2014-11-21 16:17:04，"Flavio Junqueira" <fp...@yahoo.com.INVALID> 写道：
>Hi Robin,
>
>Could you create a jira and report it there, please? If you could provide a patch, even better.
>
>-Flavio
>
>-----Original Message-----
>From: "Robin" <rc...@163.com>
>Sent: 21/11/2014 07:23
>To: "user@zookeeper.apache.org" <us...@zookeeper.apache.org>
>Subject: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
>
>Hi,
>In org.apache.zookeeper.ZooKeeper.ZKWatchManager#materialize(), even if the defaultWatcher is null, it is still be added into the Set and returned. This would cause a lot of annoying error log at org.apache.zookeeper.ClientCnxn.EventThread#processEvent as below:
> 2014-11-21 15:21:23,279 - ERROR - [main-EventThread:ClientCnxn$EventThread@524] - Error while calling watcher
> java.lang.NullPointerException
> at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
>
>It can be simply fixed by having a null check in ZKWatchManager.
>
>Thanks!
RE: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Posted by Flavio Junqueira <fp...@yahoo.com.INVALID>.
Hi Robin,
Could you create a jira and report it there, please? If you could provide a patch, even better.
-Flavio
-----Original Message-----
From: "Robin" <rc...@163.com>
Sent: 21/11/2014 07:23
To: "user@zookeeper.apache.org" <us...@zookeeper.apache.org>
Subject: A little bug in org.apache.zookeeper.ZooKeeper (3.4.6)
Hi,
In org.apache.zookeeper.ZooKeeper.ZKWatchManager#materialize(), even if the defaultWatcher is null, it is still be added into the Set and returned. This would cause a lot of annoying error log at org.apache.zookeeper.ClientCnxn.EventThread#processEvent as below:
2014-11-21 15:21:23,279 - ERROR - [main-EventThread:ClientCnxn$EventThread@524] - Error while calling watcher
java.lang.NullPointerException
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
It can be simply fixed by having a null check in ZKWatchManager.
Thanks!