Masatake Iwasaki created HADOOP-17138:
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Summary: Fix spotbugs warnings surfaced after upgrade to 4.0.6
Key: HADOOP-17138
URL: https://issues.apache.org/jira/browse/HADOOP-17138
Project: Hadoop Common
Issue Type: Bug
Reporter: Masatake Iwasaki
Assignee: Masatake Iwasaki
Spotbugs 4.0.6 generated additional warnings.
{noformat}
$ mvn clean install findbugs:findbugs -DskipTests -DskipShade
$ find . -name findbugsXml.xml | xargs -n 1
/opt/spotbugs-4.0.6/bin/convertXmlToText
M D DLS: Dead store to $L5 in
org.apache.hadoop.ipc.Server$ConnectionManager.decrUserConnections(String) At
Server.java:[line 3729]
M D DLS: Dead store to $L5 in
org.apache.hadoop.ipc.Server$ConnectionManager.incrUserConnections(String) At
Server.java:[line 3717]
H D NP: Method
org.apache.hadoop.hdfs.server.datanode.checker.DatasetVolumeChecker$ResultHandler.onSuccess(Object)
overrides the nullness annotation of parameter $L1 in an incompatible way At
DatasetVolumeChecker.java:[line 322]
H D NP: Method
org.apache.hadoop.hdfs.server.datanode.checker.DatasetVolumeChecker$ResultHandler.onSuccess(VolumeCheckResult)
overrides the nullness annotation of parameter result in an incompatible way
At DatasetVolumeChecker.java:[lines 358-376]
M D NP: Method
org.apache.hadoop.hdfs.server.datanode.checker.ThrottledAsyncChecker$2.onSuccess(Object)
overrides the nullness annotation of parameter result in an incompatible way
At ThrottledAsyncChecker.java:[lines 170-175]
M D DLS: Dead store to $L8 in
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.incrOpCount(FSEditLogOpCodes,
EnumMap, Step, StartupProgress$Counter) At FSEditLogLoader.java:[line 1241]
M D NP: result must be non-null but is marked as nullable At
LocatedFileStatusFetcher.java:[lines 380-397]
M D NP: result must be non-null but is marked as nullable At
LocatedFileStatusFetcher.java:[lines 291-309]
M D DLS: Dead store to $L6 in
org.apache.hadoop.yarn.sls.SLSRunner.increaseQueueAppNum(String) At
SLSRunner.java:[line 816]
H C UMAC: Uncallable method
org.apache.hadoop.yarn.server.timelineservice.reader.TestTimelineReaderWebServicesHBaseStorage$1.getInstance()
defined in anonymous class At
TestTimelineReaderWebServicesHBaseStorage.java:[line 87]
M D DLS: Dead store to entities in
org.apache.hadoop.yarn.server.timelineservice.storage.TestTimelineReaderHBaseDown.checkQuery(HBaseTimelineReaderImpl)
At TestTimelineReaderHBaseDown.java:[line 190]
M V EI: org.apache.hadoop.fs.cosn.CosNInputStream$ReadBuffer.getBuffer() may
expose internal representation by returning CosNInputStream$ReadBuffer.buffer
At CosNInputStream.java:[line 87]
{noformat}
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