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https://issues.apache.org/jira/browse/HDFS-14864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937156#comment-16937156
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Hadoop QA commented on HDFS-14864:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
35s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 2 new or modified test
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 17m
32s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
0s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
43s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
13m 38s{color} | {color:green} branch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
21s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
58s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
37s{color} | {color:green} hadoop-hdfs-project/hadoop-hdfs: The patch generated
0 new + 128 unchanged - 3 fixed = 128 total (was 131) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
1s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
13m 35s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
23s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 98m 46s{color}
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
37s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}158m 45s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests |
hadoop.hdfs.tools.offlineImageViewer.TestOfflineImageViewerWithStripedBlocks |
| | hadoop.hdfs.server.blockmanagement.TestUnderReplicatedBlocks |
| | hadoop.hdfs.TestDFSShell |
| | hadoop.hdfs.server.namenode.TestDiskspaceQuotaUpdate |
| | hadoop.hdfs.server.namenode.TestAddOverReplicatedStripedBlocks |
| | hadoop.hdfs.server.namenode.TestNameNodeAcl |
| | hadoop.hdfs.TestDFSStripedOutputStreamWithFailure |
| | hadoop.hdfs.server.namenode.sps.TestStoragePolicySatisfierWithStripedFile
|
| | hadoop.cli.TestHDFSCLI |
| | hadoop.hdfs.server.namenode.snapshot.TestRenameWithSnapshots |
| | hadoop.hdfs.TestDFSStripedInputStream |
| | hadoop.hdfs.TestErasureCodeBenchmarkThroughput |
| | hadoop.hdfs.TestReconstructStripedFileWithRandomECPolicy |
| | hadoop.hdfs.TestReadStripedFileWithDecodingCorruptData |
| | hadoop.hdfs.server.namenode.TestReconstructStripedBlocks |
| | hadoop.hdfs.server.namenode.TestQuotaByStorageType |
| | hadoop.hdfs.server.datanode.TestDataNodeUUID |
| | hadoop.hdfs.server.namenode.TestAclConfigFlag |
| | hadoop.hdfs.server.datanode.TestDataNodeMetrics |
| | hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics |
| | hadoop.hdfs.TestAclsEndToEnd |
| | hadoop.hdfs.server.blockmanagement.TestBlockInfoStriped |
| | hadoop.hdfs.server.namenode.TestFileTruncate |
| | hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.1 Server=19.03.1 Image:yetus/hadoop:efed4450bf1 |
| JIRA Issue | HDFS-14864 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12981217/HDFS-14864.4.patch |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient findbugs checkstyle |
| uname | Linux c5f8abed2bf9 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6
11:12:41 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / afa1006 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_222 |
| findbugs | v3.1.0-RC1 |
| unit |
https://builds.apache.org/job/PreCommit-HDFS-Build/27954/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/27954/testReport/ |
| Max. process+thread count | 4279 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/27954/console |
| Powered by | Apache Yetus 0.8.0 http://yetus.apache.org |
This message was automatically generated.
> DatanodeDescriptor Use Concurrent BlockingQueue
> -----------------------------------------------
>
> Key: HDFS-14864
> URL: https://issues.apache.org/jira/browse/HDFS-14864
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.2.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Minor
> Attachments: HDFS-14864.1.patch, HDFS-14864.2.patch,
> HDFS-14864.3.patch, HDFS-14864.4.patch
>
>
> https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java#L104-L106
> This collection needs to be thread safe and it needs to repeatedly poll the
> queue to drain it, so use {{BlockingQueue}} which has a {{drain()}} method
> just for this purpose:
> {quote}
> This operation may be more efficient than repeatedly polling this queue.
> {quote}
> [https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/BlockingQueue.html#drainTo(java.util.Collection,%20int)]
> Also, the collection returns 'null' if there is nothing to drain from the
> queue. This is a confusing and error-prone affect. It should just return an
> empty list. I've also updated the code to be more consistent and to return a
> java {{List}} in all places instead of a {{List}} in some and a native array
> in others. This will make the entire usage much more consistent and safe.
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