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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8294) Erasure Coding: Fix Findbug warnings present in erasure coding
Date Mon, 11 May 2015 04:48:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rakesh R updated HDFS-8294:
---------------------------
    Description: 
This jira is to address the findbug issues reported in erasure coding feature.

Attached sheet which contains the details of the findbug issues reported in the erasure coding
feature. I've taken this report from the jenkins build : 
https://builds.apache.org/job/PreCommit-HDFS-Build/10848/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html.


  was:
Following are the findbug warnings :-

# Possible null pointer dereference of arr$ in org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction.initializeBlockRecovery(long)
{code}
Bug type NP_NULL_ON_SOME_PATH (click for details) 
In class org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction
In method org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStripedUnderConstruction.initializeBlockRecovery(long)
Value loaded from arr$
Dereferenced at BlockInfoStripedUnderConstruction.java:[line 206]
Known null at BlockInfoStripedUnderConstruction.java:[line 200]
{code}
# Found reliance on default encoding in org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.createErasureCodingZone(String,
ECSchema): String.getBytes()
Found reliance on default encoding in org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.getECZoneInfo(INodesInPath):
new String(byte[])
{code}
Bug type DM_DEFAULT_ENCODING (click for details) 
In class org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager
In method org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.createErasureCodingZone(String,
ECSchema)
Called method String.getBytes()
At ErasureCodingZoneManager.java:[line 116]

Bug type DM_DEFAULT_ENCODING (click for details) 
In class org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager
In method org.apache.hadoop.hdfs.server.namenode.ErasureCodingZoneManager.getECZoneInfo(INodesInPath)
Called method new String(byte[])
At ErasureCodingZoneManager.java:[line 81]
{code}
# Inconsistent synchronization of org.apache.hadoop.hdfs.DFSOutputStream.streamer; locked
90% of time
{code}
Bug type IS2_INCONSISTENT_SYNC (click for details) 
In class org.apache.hadoop.hdfs.DFSOutputStream
Field org.apache.hadoop.hdfs.DFSOutputStream.streamer
Synchronized 90% of the time
Unsynchronized access at DFSOutputStream.java:[line 142]
Unsynchronized access at DFSOutputStream.java:[line 853]
Unsynchronized access at DFSOutputStream.java:[line 617]
Unsynchronized access at DFSOutputStream.java:[line 620]
Unsynchronized access at DFSOutputStream.java:[line 630]
Unsynchronized access at DFSOutputStream.java:[line 338]
Unsynchronized access at DFSOutputStream.java:[line 734]
Unsynchronized access at DFSOutputStream.java:[line 897]
{code}
# Dead store to offSuccess in org.apache.hadoop.hdfs.StripedDataStreamer.endBlock()
{code}
Bug type DLS_DEAD_LOCAL_STORE (click for details) 
In class org.apache.hadoop.hdfs.StripedDataStreamer
In method org.apache.hadoop.hdfs.StripedDataStreamer.endBlock()
Local variable named offSuccess
At StripedDataStreamer.java:[line 105]
{code}
# Result of integer multiplication cast to long in org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped.spaceConsumed()
{code}
Bug type ICAST_INTEGER_MULTIPLY_CAST_TO_LONG (click for details) 
In class org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped
In method org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped.spaceConsumed()
At BlockInfoStriped.java:[line 208]
{code}
# Result of integer multiplication cast to long in org.apache.hadoop.hdfs.util.StripedBlockUtil.constructInternalBlock(LocatedStripedBlock,
int, int, int, int)
{code}
Bug type ICAST_INTEGER_MULTIPLY_CAST_TO_LONG (click for details) 
In class org.apache.hadoop.hdfs.util.StripedBlockUtil
In method org.apache.hadoop.hdfs.util.StripedBlockUtil.constructInternalBlock(LocatedStripedBlock,
int, int, int, int)
At StripedBlockUtil.java:[line 85]
{code}
# Switch statement found in org.apache.hadoop.hdfs.DFSStripedInputStream.fetchBlockByteRange(long,
long, long, byte[], int, Map) where default case is missing
{code}
Bug type SF_SWITCH_NO_DEFAULT (click for details) 
In class org.apache.hadoop.hdfs.DFSStripedInputStream
In method org.apache.hadoop.hdfs.DFSStripedInputStream.fetchBlockByteRange(long, long, long,
byte[], int, Map)
At DFSStripedInputStream.java:[lines 468-491]
{code}


> Erasure Coding: Fix Findbug warnings present in erasure coding
> --------------------------------------------------------------
>
>                 Key: HDFS-8294
>                 URL: https://issues.apache.org/jira/browse/HDFS-8294
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>              Labels: BB2015-05-RFC
>         Attachments: FindBugs Report in EC feature.html, HDFS-8294-HDFS-7285.00.patch,
HDFS-8294-HDFS-7285.01.patch, HDFS-8294-HDFS-7285.02.patch, HDFS-8294-HDFS-7285.03.patch
>
>
> This jira is to address the findbug issues reported in erasure coding feature.
> Attached sheet which contains the details of the findbug issues reported in the erasure
coding feature. I've taken this report from the jenkins build : 
> https://builds.apache.org/job/PreCommit-HDFS-Build/10848/artifact/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html.



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