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https://issues.apache.org/jira/browse/HIVE-22420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16966639#comment-16966639
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Hive QA commented on HIVE-22420:
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {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:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 9m
18s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
6s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
39s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue} 4m
7s{color} | {color:blue} ql in master has 1550 extant Findbugs warnings.
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
5s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m
8s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m
8s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m
40s{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} 4m
17s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
6s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
16s{color} | {color:green} The patch does not generate ASF License warnings.
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| {color:black}{color} | {color:black} {color} | {color:black} 25m 46s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Optional Tests | asflicense javac javadoc findbugs checkstyle compile |
| uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian
3.16.43-2+deb8u5 (2017-09-19) x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/data/hiveptest/working/yetus_PreCommit-HIVE-Build-19281/dev-support/hive-personality.sh
|
| git revision | master / cdad75a |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.1 |
| modules | C: ql U: ql |
| Console output |
http://104.198.109.242/logs//PreCommit-HIVE-Build-19281/yetus.txt |
| Powered by | Apache Yetus http://yetus.apache.org |
This message was automatically generated.
> DbTxnManager.stopHeartbeat() should be thread-safe
> --------------------------------------------------
>
> Key: HIVE-22420
> URL: https://issues.apache.org/jira/browse/HIVE-22420
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.1.0
> Reporter: Aron Hamvas
> Assignee: Aron Hamvas
> Priority: Major
> Attachments: HIVE-22420.1.patch, HIVE-22420.2.patch
>
>
> When a transactional query is being executed and interrupted via HS2 close
> operation request, both the background pool thread executing the query and
> the HttpHandler thread running the close operation logic will eventually call
> the below method:
> {noformat}
> Driver.releaseLocksAndCommitOrRollback(commit boolean)
> {noformat}
> Since this method is invoked several times in both threads, it can happen
> that the two threads invoke it at the same time, and due to a race condition,
> the txnId field of the DbTxnManager used by both threads could be set to 0
> without actually successfully aborting the transaction.
> The root cause is stopHeartbeat() method in DbTxnManager not being thread
> safe:
> When Thread-1 and Thread-2 enter stopHeartbeat() with very little time
> difference, Thread-1 might successfully cancel the heartbeat task and set the
> heartbeatTask field to null, while Thread-2 is trying to observe its state.
> Thread-1 will return to the calling rollbackTxn() method and continue
> execution there, while Thread-2 wis thrown back to the same method with a
> NullPointerException. Thread-2 will then set txnId to 0, and Thread-1 is
> sending this 0 value to HMS. So, the txn will not be aborted, and the locks
> cannot be released later on either.
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