[
https://issues.apache.org/jira/browse/HDFS-15759?focusedWorklogId=579857&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-579857
]
ASF GitHub Bot logged work on HDFS-15759:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Apr/21 09:13
Start Date: 09/Apr/21 09:13
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2868:
URL: https://github.com/apache/hadoop/pull/2868#issuecomment-816543817
:broken_heart: **-1 overall**
| Vote | Subsystem | Runtime | Logfile | Comment |
|:----:|----------:|--------:|:--------:|:-------:|
| +0 :ok: | reexec | 1m 8s | | 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: | markdownlint | 0m 1s | | markdownlint 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 5 new or modified test files. |
|||| _ branch-3.2 Compile Tests _ |
| +0 :ok: | mvndep | 4m 27s | | Maven dependency ordering for branch |
| +1 :green_heart: | mvninstall | 24m 20s | | branch-3.2 passed |
| +1 :green_heart: | compile | 15m 30s | | branch-3.2 passed |
| +1 :green_heart: | checkstyle | 2m 34s | | branch-3.2 passed |
| +1 :green_heart: | mvnsite | 2m 41s | | branch-3.2 passed |
| +1 :green_heart: | javadoc | 2m 21s | | branch-3.2 passed |
| +1 :green_heart: | spotbugs | 5m 8s | | branch-3.2 passed |
| +1 :green_heart: | shadedclient | 15m 21s | | branch has no errors
when building and testing our client artifacts. |
|||| _ Patch Compile Tests _ |
| +0 :ok: | mvndep | 0m 24s | | Maven dependency ordering for patch |
| +1 :green_heart: | mvninstall | 1m 53s | | the patch passed |
| +1 :green_heart: | compile | 14m 59s | | the patch passed |
| +1 :green_heart: | javac | 14m 59s | | the patch passed |
| +1 :green_heart: | blanks | 0m 0s | | The patch has no blanks
issues. |
| +1 :green_heart: | checkstyle | 2m 34s | | the patch passed |
| +1 :green_heart: | mvnsite | 2m 44s | | the patch passed |
| +1 :green_heart: | xml | 0m 1s | | The patch has no ill-formed XML
file. |
| +1 :green_heart: | javadoc | 2m 16s | | the patch passed |
| +1 :green_heart: | spotbugs | 5m 24s | | the patch passed |
| +1 :green_heart: | shadedclient | 15m 39s | | patch has no errors
when building and testing our client artifacts. |
|||| _ Other Tests _ |
| -1 :x: | unit | 15m 32s |
[/patch-unit-hadoop-common-project_hadoop-common.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2868/2/artifact/out/patch-unit-hadoop-common-project_hadoop-common.txt)
| hadoop-common in the patch failed. |
| -1 :x: | unit | 216m 46s |
[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2868/2/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
| hadoop-hdfs in the patch failed. |
| +1 :green_heart: | asflicense | 1m 6s | | The patch does not
generate ASF License warnings. |
| | | 351m 46s | | |
| Reason | Tests |
|-------:|:------|
| Failed junit tests |
hadoop.io.compress.snappy.TestSnappyCompressorDecompressor |
| | hadoop.io.compress.TestCompressorDecompressor |
| | hadoop.hdfs.server.namenode.TestFsck |
| | hadoop.hdfs.TestRollingUpgrade |
| | hadoop.hdfs.server.datanode.TestBlockRecovery |
| | hadoop.hdfs.server.namenode.TestRedudantBlocks |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2868/2/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2868 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient spotbugs checkstyle codespell markdownlint xml |
| uname | Linux 4cbf0596110f 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9
23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | branch-3.2 / 78e228f24d8356db22d8ff3013a64724e18a2372 |
| Default Java | Private Build-1.8.0_282-8u282-b08-0ubuntu1~18.04-b08 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2868/2/testReport/ |
| Max. process+thread count | 3088 (vs. ulimit of 5500) |
| modules | C: hadoop-common-project/hadoop-common
hadoop-hdfs-project/hadoop-hdfs U: . |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2868/2/console |
| versions | git=2.17.1 maven=3.6.0 spotbugs=4.2.2 |
| Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 579857)
Time Spent: 9h 20m (was: 9h 10m)
> EC: Verify EC reconstruction correctness on DataNode
> ----------------------------------------------------
>
> Key: HDFS-15759
> URL: https://issues.apache.org/jira/browse/HDFS-15759
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: datanode, ec, erasure-coding
> Affects Versions: 3.4.0
> Reporter: Toshihiko Uchida
> Assignee: Toshihiko Uchida
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.1, 3.4.0
>
> Time Spent: 9h 20m
> Remaining Estimate: 0h
>
> EC reconstruction on DataNode has caused data corruption: HDFS-14768,
> HDFS-15186 and HDFS-15240. Those issues occur under specific conditions and
> the corruption is neither detected nor auto-healed by HDFS. It is obviously
> hard for users to monitor data integrity by themselves, and even if they find
> corrupted data, it is difficult or sometimes impossible to recover them.
> To prevent further data corruption issues, this feature proposes a simple and
> effective way to verify EC reconstruction correctness on DataNode at each
> reconstruction process.
> It verifies correctness of outputs decoded from inputs as follows:
> 1. Decoding an input with the outputs;
> 2. Compare the decoded input with the original input.
> For instance, in RS-6-3, assume that outputs [d1, p1] are decoded from inputs
> [d0, d2, d3, d4, d5, p0]. Then the verification is done by decoding d0 from
> [d1, d2, d3, d4, d5, p1], and comparing the original and decoded data of d0.
> When an EC reconstruction task goes wrong, the comparison will fail with high
> probability.
> Then the task will also fail and be retried by NameNode.
> The next reconstruction will succeed if the condition triggered the failure
> is gone.
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