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https://issues.apache.org/jira/browse/HDFS-11292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15799806#comment-15799806
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Hadoop QA commented on HDFS-11292:
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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
13s{color} | {color:blue} Docker mode activated. {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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m
0s{color} | {color:red} The patch doesn't appear to include any new or modified
tests. Please justify why no new tests are needed for this patch. Also please
list what manual steps were performed to verify this patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 12m
46s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
47s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
28s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
52s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
12s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m
45s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
39s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
46s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
25s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m
51s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
10s{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} findbugs {color} | {color:green} 1m
54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
39s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 64m
41s{color} | {color:green} hadoop-hdfs in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
22s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 89m 26s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:a9ad5d6 |
| JIRA Issue | HDFS-11292 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12845641/HDFS-11292.002.patch |
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit findbugs checkstyle |
| uname | Linux 8e542c7c6dff 3.13.0-95-generic #142-Ubuntu SMP Fri Aug 12
17:00:09 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / a0a2761 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HDFS-Build/18029/testReport/ |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U:
hadoop-hdfs-project/hadoop-hdfs |
| Console output |
https://builds.apache.org/job/PreCommit-HDFS-Build/18029/console |
| Powered by | Apache Yetus 0.5.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> log lastWrittenTxId in logSyncAll
> ---------------------------------
>
> Key: HDFS-11292
> URL: https://issues.apache.org/jira/browse/HDFS-11292
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-11292.001.patch, HDFS-11292.002.patch
>
>
> For the issue reported in HDFS-10943, even after HDFS-7964's fix is included,
> the problem still exists, this means there might be some synchronization
> issue.
> To diagnose that, create this jira to report the lastWrittenTxId info in
> {{logSyncAll()}} call, such that we can compare against the error message
> reported in HDFS-7964
> Specifically, there is two possibility for the HDFS-10943 issue:
> 1. {{logSyncAll()}} (statement A in the code quoted below) doesn't flush all
> requested txs for some reason
> 2. {{logSyncAll()}} does flush all requested txs, but some new txs sneaked
> in between A and B. It's observed that the lastWrittenTxId in B and C are the
> same.
> This proposed reporting would help confirming if 2 is true.
> {code}
> public synchronized void endCurrentLogSegment(boolean writeEndTxn) {
> LOG.info("Ending log segment " + curSegmentTxId);
> Preconditions.checkState(isSegmentOpen(),
> "Bad state: %s", state);
> if (writeEndTxn) {
> logEdit(LogSegmentOp.getInstance(cache.get(),
> FSEditLogOpCodes.OP_END_LOG_SEGMENT));
> }
> // always sync to ensure all edits are flushed.
> A. logSyncAll();
> B. printStatistics(true);
> final long lastTxId = getLastWrittenTxId();
> try {
> C. journalSet.finalizeLogSegment(curSegmentTxId, lastTxId);
> editLogStream = null;
> } catch (IOException e) {
> //All journals have failed, it will be handled in logSync.
> }
> state = State.BETWEEN_LOG_SEGMENTS;
> }
> {code}
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