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https://issues.apache.org/jira/browse/ZOOKEEPER-268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662431#action_12662431
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Patrick Hunt commented on ZOOKEEPER-268:
----------------------------------------
The compiler/eclipse/findbugs complains about empty block. I would have removed
it entirely (the constructor) however the intent was to not allow Utils to be
constructed (private constructor). So I just added the super() call to remove
the warning.
> tostring on jute generated objects can cause NPE
> ------------------------------------------------
>
> Key: ZOOKEEPER-268
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-268
> Project: Zookeeper
> Issue Type: Bug
> Components: java client, server
> Affects Versions: 3.0.0, 3.0.1
> Reporter: Patrick Hunt
> Assignee: Patrick Hunt
> Fix For: 3.1.0
>
> Attachments: ZOOKEEPER-268.patch
>
>
> Jute still causing problems with tostring operations on generated code, need
> to review/cleanup the toCSV code
> From user Kevin Burton:
> ---------------------------------------------
> Creating this node with this ACL:
> Created /foo
> setAcl /foo world:anyone:w
> Causes the exception included below.
> It's an infinite loop so it's just called over and over again filling my
> console.
> I'm just doing an exists( path, true ); ... setting a watch still causes the
> problem.
> java.lang.NullPointerException
> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
> at
> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
> at
> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
> java.lang.NullPointerException
> at org.apache.jute.Utils.toCSVBuffer(Utils.java:234)
> at
> org.apache.jute.CsvOutputArchive.writeBuffer(CsvOutputArchive.java:101)
> at
> org.apache.zookeeper.proto.GetDataResponse.toString(GetDataResponse.java:48)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$Packet.toString(ClientCnxn.java:230)
> at java.lang.String.valueOf(String.java:2827)
> at java.lang.StringBuilder.append(StringBuilder.java:115)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:586)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:626)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:852)
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