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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2733) Cleanup findbug warnings in branch-3.4: Dodgy code Warnings
Date Thu, 18 May 2017 20:27:04 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016414#comment-16016414
] 

ASF GitHub Bot commented on ZOOKEEPER-2733:
-------------------------------------------

Github user afine commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/236#discussion_r117345530
  
    --- Diff: src/java/main/org/apache/zookeeper/server/PurgeTxnLog.java ---
    @@ -133,11 +133,17 @@ public boolean accept(File f){
                 }
             }
             // add all non-excluded log files
    -        List<File> files = new ArrayList<File>(Arrays.asList(txnLog
    -                .getDataDir().listFiles(new MyFileFilter(PREFIX_LOG))));
    +        List<File> files = new ArrayList<File>();
    +        File[] fileArray;
    +        if ((fileArray = txnLog.getDataDir().listFiles(new MyFileFilter(PREFIX_LOG)))
!= null) {
    +            files.addAll(Arrays.asList(fileArray));
    +        }
    +
             // add all non-excluded snapshot files to the deletion list
    -        files.addAll(Arrays.asList(txnLog.getSnapDir().listFiles(
    -                new MyFileFilter(PREFIX_SNAPSHOT))));
    +        if ((fileArray = txnLog.getSnapDir().listFiles(new MyFileFilter(PREFIX_SNAPSHOT)))
!= null) {
    --- End diff --
    
    fixed


> Cleanup findbug warnings in branch-3.4: Dodgy code Warnings
> -----------------------------------------------------------
>
>                 Key: ZOOKEEPER-2733
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2733
>             Project: ZooKeeper
>          Issue Type: Sub-task
>            Reporter: Rakesh R
>            Assignee: Abraham Fine
>             Fix For: 3.4.11
>
>
> Please refer the attached sheet in parent jira. Below is the details of findbug warnings.
> {code}
> DB	org.apache.zookeeper.server.quorum.auth.SaslQuorumAuthLearner.send(DataOutputStream,
byte[]) uses the same code for two branches
> DLS	Dead store to txn in org.apache.zookeeper.server.quorum.LearnerHandler.packetToString(QuorumPacket)
> NP	Load of known null value in org.apache.zookeeper.server.PrepRequestProcessor.pRequest(Request)
> NP	Possible null pointer dereference in org.apache.zookeeper.server.PurgeTxnLog.purgeOlderSnapshots(FileTxnSnapLog,
File) due to return value of called method
> NP	Possible null pointer dereference in org.apache.zookeeper.server.PurgeTxnLog.purgeOlderSnapshots(FileTxnSnapLog,
File) due to return value of called method
> NP	Load of known null value in org.apache.zookeeper.server.quorum.auth.SaslQuorumAuthLearner.send(DataOutputStream,
byte[])
> NP	Load of known null value in org.apache.zookeeper.server.quorum.auth.SaslQuorumAuthServer.send(DataOutputStream,
byte[], QuorumAuth$Status)
> NP	Possible null pointer dereference in org.apache.zookeeper.server.upgrade.UpgradeMain.copyFiles(File,
File, String) due to return value of called method
> RCN	Redundant nullcheck of bytes, which is known to be non-null in org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next()
> SF	Switch statement found in org.apache.zookeeper.server.PrepRequestProcessor.pRequest(Request)
where default case is missing
> SF	Switch statement found in org.apache.zookeeper.server.PrepRequestProcessor.pRequest2Txn(int,
long, Request, Record, boolean) where default case is missing
> SF	Switch statement found in org.apache.zookeeper.server.quorum.AuthFastLeaderElection$Messenger$WorkerReceiver.run()
where default case is missing
> SF	Switch statement found in org.apache.zookeeper.server.quorum.AuthFastLeaderElection$Messenger$WorkerSender.process(AuthFastLeaderElection$ToSend)
where default case is missing
> SF	Switch statement found in org.apache.zookeeper.server.quorum.Follower.processPacket(QuorumPacket)
where default case is missing
> SF	Switch statement found in org.apache.zookeeper.server.quorum.Observer.processPacket(QuorumPacket)
where default case is missing
> ST	Write to static field org.apache.zookeeper.server.SyncRequestProcessor.randRoll from
instance method org.apache.zookeeper.server.SyncRequestProcessor.run()
> UrF	Unread public/protected field: org.apache.zookeeper.server.upgrade.DataTreeV1$ProcessTxnResult.err
> UrF	Unread public/protected field: org.apache.zookeeper.server.upgrade.DataTreeV1$ProcessTxnResult.path
> UrF	Unread public/protected field: org.apache.zookeeper.server.upgrade.DataTreeV1$ProcessTxnResult.stat
> UrF	Unread public/protected field: org.apache.zookeeper.server.upgrade.DataTreeV1$ProcessTxnResult.type
> {code}



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