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Posted to common-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/10/05 20:02:00 UTC
[jira] [Commented] (HADOOP-18429) MutableGaugeFloat#incr(float) get stuck in an infinite loop
[ https://issues.apache.org/jira/browse/HADOOP-18429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17613173#comment-17613173 ]
ASF GitHub Bot commented on HADOOP-18429:
-----------------------------------------
hadoop-yetus commented on PR #4823:
URL: https://github.com/apache/hadoop/pull/4823#issuecomment-1265235069
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 42s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 0s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 0s | | detect-secrets was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain any @author tags. |
| +1 :green_heart: | test4tests | 0m 0s | | The patch appears to include 1 new or modified test files. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 39m 51s | | trunk passed |
| +1 :green_heart: | compile | 25m 42s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 21m 16s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 1m 28s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 58s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 29s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 15s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 2m 54s | | trunk passed |
| +1 :green_heart: | shadedclient | 22m 56s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 2s | | the patch passed |
| +1 :green_heart: | compile | 22m 43s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javac | 22m 43s | | the patch passed |
| +1 :green_heart: | compile | 20m 49s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 20m 49s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| +1 :green_heart: | checkstyle | 1m 22s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 59s | | the patch passed |
| +1 :green_heart: | javadoc | 1m 20s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 6s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 2m 52s | | the patch passed |
| +1 :green_heart: | shadedclient | 23m 13s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 18m 41s | | hadoop-common in the patch passed. |
| +1 :green_heart: | asflicense | 1m 23s | | The patch does not generate ASF License warnings. |
| | | 216m 52s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4823/5/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/4823 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux bba9966bcacb 4.15.0-191-generic #202-Ubuntu SMP Thu Aug 4 01:49:29 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | trunk / 51ba2174c5e06c662cd960837d194d7e4e93e322 |
| Default Java | Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| Multi-JDK versions | /usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 /usr/lib/jvm/java-8-openjdk-amd64:Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4823/5/testReport/ |
| Max. process+thread count | 2218 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4823/5/console |
| versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0 https://yetus.apache.org |
This message was automatically generated.
> MutableGaugeFloat#incr(float) get stuck in an infinite loop
> -----------------------------------------------------------
>
> Key: HADOOP-18429
> URL: https://issues.apache.org/jira/browse/HADOOP-18429
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Reporter: xinqiu.hu
> Assignee: Ashutosh Gupta
> Priority: Major
> Labels: pull-request-available
>
> The current implementation converts the value from int to float, causing the compareAndSet method to get stuck.
> {code:java}
> private final boolean compareAndSet(float expect, float update) {
> return value.compareAndSet(Float.floatToIntBits(expect),
> Float.floatToIntBits(update));
> }
> private void incr(float delta) {
> while (true) {
> float current = value.get();
> float next = current + delta;
> if (compareAndSet(current, next)) {
> setChanged();
> return;
> }
> }
> } {code}
>
> Perhaps it could be:
> {code:java}
> private void incr(float delta) {
> while (true) {
> float current = Float.intBitsToFloat(value.get());
> float next = current + delta;
> if (compareAndSet(current, next)) {
> setChanged();
> return;
> }
> }
> } {code}
>
> The unit test looks like this
> {code:java}
> MutableGaugeFloat mgf = new MutableGaugeFloat(Context,3.2f);
> assertEquals(3.2f, mgf.value(), 0.0);
> mgf.incr();
> assertEquals(4.2f, mgf.value(), 0.0); {code}
>
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