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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2022/10/08 11:36:34 UTC
[GitHub] [hadoop] ZanderXu opened a new pull request, #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
ZanderXu opened a new pull request, #4987:
URL: https://github.com/apache/hadoop/pull/4987
### Description of PR
During looking into some code related XATTR, I found there is a bug in SerialNumberMap, as bellow:
```
public int get(T t) {
if (t == null) {
return 0;
}
Integer sn = t2i.get(t);
if (sn == null) {
sn = current.getAndIncrement();
if (sn > max) {
current.getAndDecrement();
throw new IllegalStateException(name + ": serial number map is full");
}
Integer old = t2i.putIfAbsent(t, sn);
if (old != null) {
// here: if the old is not null, we should decrease the current value.
return old;
}
i2t.put(sn, t);
}
return sn;
}
```
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[GitHub] [hadoop] hadoop-yetus commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272383474
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 0m 52s | | Docker mode activated. |
|||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 0s | | No case conflicting files found. |
| +0 :ok: | codespell | 0m 1s | | codespell was not available. |
| +0 :ok: | detsecrets | 0m 1s | | detect-secrets was not available. |
| +1 :green_heart: | @author | 0m 0s | | The patch does not contain any @author tags. |
| -1 :x: | test4tests | 0m 0s | | 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. |
|||| _ trunk Compile Tests _ |
| +1 :green_heart: | mvninstall | 41m 51s | | trunk passed |
| +1 :green_heart: | compile | 1m 37s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | compile | 1m 28s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | checkstyle | 1m 16s | | trunk passed |
| +1 :green_heart: | mvnsite | 1m 37s | | trunk passed |
| +1 :green_heart: | javadoc | 1m 17s | | trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 42s | | trunk passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 40s | | trunk passed |
| +1 :green_heart: | shadedclient | 26m 39s | | branch has no errors when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 1m 22s | | the patch passed |
| +1 :green_heart: | compile | 1m 26s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javac | 1m 26s | | the patch passed |
| +1 :green_heart: | compile | 1m 18s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | javac | 1m 18s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks issues. |
| +1 :green_heart: | checkstyle | 1m 0s | | the patch passed |
| +1 :green_heart: | mvnsite | 1m 25s | | the patch passed |
| +1 :green_heart: | javadoc | 0m 56s | | the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04 |
| +1 :green_heart: | javadoc | 1m 30s | | the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
| +1 :green_heart: | spotbugs | 3m 32s | | the patch passed |
| +1 :green_heart: | shadedclient | 26m 8s | | patch has no errors when building and testing our client artifacts. |
|||| _ Other Tests _ |
| +1 :green_heart: | unit | 352m 32s | | hadoop-hdfs in the patch passed. |
| +1 :green_heart: | asflicense | 0m 54s | | The patch does not generate ASF License warnings. |
| | | 471m 19s | | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4987/1/artifact/out/Dockerfile |
| GITHUB PR | https://github.com/apache/hadoop/pull/4987 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
| uname | Linux 1e14947bde23 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 / 1c17673c4a096e2f3a2fb289128bafbe4694a68e |
| 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-4987/1/testReport/ |
| Max. process+thread count | 2109 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs |
| Console output | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4987/1/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 |
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[GitHub] [hadoop] Hexiaoqiao merged pull request #4987: HDFS-16798. SerialNumberMap should decrease current counter if the item exist
Posted by GitBox <gi...@apache.org>.
Hexiaoqiao merged PR #4987:
URL: https://github.com/apache/hadoop/pull/4987
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[GitHub] [hadoop] Hexiaoqiao commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease current counter if the item exist
Posted by GitBox <gi...@apache.org>.
Hexiaoqiao commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272516014
@ZanderXu Please let me know if we should backport to other active branches.
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[GitHub] [hadoop] nstang01 commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease current counter if the item exist
Posted by "nstang01 (via GitHub)" <gi...@apache.org>.
nstang01 commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1701144060
This mr may cause the corresponding relationship between t2i and i2t to be inconsistent? @Hexiaoqiao
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[GitHub] [hadoop] slfan1989 commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272508207
> Great catch here. +1 from my side. IMO, this bug will only cause that the capacity of serialNumberMap is less than expected, no other impact, right? If true, suggest to add detail for the description segment of this PR.
LGTM.
@ZanderXu Thanks for the contribution!
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[GitHub] [hadoop] Hexiaoqiao commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
Hexiaoqiao commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272501779
@slfan1989 would you mind to take another check?
BTW please leave one email address for communication offline if possible.
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[GitHub] [hadoop] ZanderXu commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
ZanderXu commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272508888
@Hexiaoqiao @slfan1989 Thanks for your review.
> This bug will only cause that the capacity of serialNumberMap is less than expected, no other impact.
Yes, it is. I have updated the description.
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[GitHub] [hadoop] slfan1989 commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272508788
> @slfan1989 would you mind to take another check? BTW please leave one email address for communication offline if possible.
my personal email slfan1989@foxmail.com, looking forward to communicating with you @Hexiaoqiao @ZanderXu
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[GitHub] [hadoop] ZanderXu commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
ZanderXu commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272346518
> Congratulations on your promotion to committer, very good!
@slfan1989 Thanks, bro. You will get a promotion soon.
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[GitHub] [hadoop] Hexiaoqiao commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease current counter if the item exist
Posted by GitBox <gi...@apache.org>.
Hexiaoqiao commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272515908
Committed to trunk. Thanks @ZanderXu for your works. Thanks @slfan1989 for your reviews.
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[GitHub] [hadoop] slfan1989 commented on pull request #4987: HDFS-16798. SerialNumberMap should decrease the current if the old already exist
Posted by GitBox <gi...@apache.org>.
slfan1989 commented on PR #4987:
URL: https://github.com/apache/hadoop/pull/4987#issuecomment-1272331099
@ZanderXu Congratulations on your promotion to committer, very good!
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