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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2022/09/17 19:34:50 UTC

[GitHub] [hadoop] Kidd53685368 opened a new pull request, #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Kidd53685368 opened a new pull request, #4901:
URL: https://github.com/apache/hadoop/pull/4901

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   ### Description of PR
   [JIRA-HDFS-16776](https://issues.apache.org/jira/browse/HDFS-16776)
   The length of targets should be checked when DN gets a EC reconstruction task.For some reason ([HDFS-14768](https://issues.apache.org/jira/browse/HDFS-14768), [HDFS-16739](https://issues.apache.org/jira/browse/HDFS-16739)) , the length of targets will be larger than additionalReplRequired which causes some elements in targets get the default value 0. It may trigger the bug which leads to the data corrupttion just like [HDFS-14768](https://issues.apache.org/jira/browse/HDFS-14768).


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[GitHub] [hadoop] tasanuma commented on a diff in pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
tasanuma commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r976232952


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedReconstructor.java:
##########
@@ -288,6 +292,10 @@ RawErasureDecoder getDecoder() {
     return decoder;
   }
 
+  int getIndicesNum(){
+    return liveIndiceNum;
+  }
+

Review Comment:
   @Kidd53685368 Thanks for your PR.
   How about using `BitSet#cardinality` instead of calculating `liveIndiceNum`?
   ```suggestion
     int getNumLiveBlocks(){
       return liveBitSet.cardinality();
     }
   
   ```



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[GitHub] [hadoop] tasanuma commented on a diff in pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
tasanuma commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r977173136


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedWriter.java:
##########
@@ -82,8 +82,10 @@ class StripedWriter {
     assert targetStorageIds != null;
 
     writers = new StripedBlockWriter[targets.length];
-
     targetIndices = new short[targets.length];
+    Preconditions.checkArgument(
+            targetIndices.length <= dataBlkNum + parityBlkNum - reconstructor.getNumLiveBlocks(),
+            "Reconstrutcion work gets too much targets.");

Review Comment:
   @Kidd53685368 Sorry, I have one more request. `Reconstrutcion` is a typo of `Reconstruction`.



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[GitHub] [hadoop] tasanuma commented on a diff in pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
tasanuma commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r976236334


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedWriter.java:
##########
@@ -84,6 +84,8 @@ class StripedWriter {
     writers = new StripedBlockWriter[targets.length];
 
     targetIndices = new short[targets.length];
+    Preconditions.checkArgument(targetIndices.length <= dataBlkNum + parityBlkNum - reconstructor.getIndicesNum(),

Review Comment:
   Could you fix the checkstyle error?
   ```
   Line is longer than 100 characters (found 114)
   ```



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[GitHub] [hadoop] hadoop-yetus commented on pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#issuecomment-1255484665

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[GitHub] [hadoop] Kidd53685368 commented on a diff in pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
Kidd53685368 commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r977166318


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedReconstructor.java:
##########
@@ -288,6 +292,10 @@ RawErasureDecoder getDecoder() {
     return decoder;
   }
 
+  int getIndicesNum(){
+    return liveIndiceNum;
+  }
+

Review Comment:
   Thanks, this is absolutely a better substitution.



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[GitHub] [hadoop] tasanuma merged pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
tasanuma merged PR #4901:
URL: https://github.com/apache/hadoop/pull/4901


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#issuecomment-1250170045

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[GitHub] [hadoop] Kidd53685368 commented on a diff in pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
Kidd53685368 commented on code in PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#discussion_r977166431


##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/StripedWriter.java:
##########
@@ -84,6 +84,8 @@ class StripedWriter {
     writers = new StripedBlockWriter[targets.length];
 
     targetIndices = new short[targets.length];
+    Preconditions.checkArgument(targetIndices.length <= dataBlkNum + parityBlkNum - reconstructor.getIndicesNum(),

Review Comment:
   Fixed



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[GitHub] [hadoop] tasanuma commented on pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
tasanuma commented on PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#issuecomment-1255763877

   Merged. Thanks for your contribution, @Kidd53685368.


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[GitHub] [hadoop] hadoop-yetus commented on pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#issuecomment-1254068013

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[GitHub] [hadoop] hadoop-yetus commented on pull request #4901: HDFS-16776 Erasure Coding: The length of targets should be checked when DN gets a reconstruction task

Posted by GitBox <gi...@apache.org>.
hadoop-yetus commented on PR #4901:
URL: https://github.com/apache/hadoop/pull/4901#issuecomment-1250344314

   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   0m 39s |  |  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 :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  |  38m 17s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |   1m 42s |  |  trunk passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04  |
   | +1 :green_heart: |  compile  |   1m 29s |  |  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 43s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   1m 23s |  |  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 35s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  |  23m  1s |  |  branch has no errors when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   1m 26s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m 23s |  |  the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04  |
   | +1 :green_heart: |  javac  |   1m 23s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |   1m 24s |  |  the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  javac  |   1m 24s |  |  the patch passed  |
   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks issues.  |
   | -0 :warning: |  checkstyle  |   1m  1s | [/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4901/2/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt) |  hadoop-hdfs-project/hadoop-hdfs: The patch generated 1 new + 0 unchanged - 0 fixed = 1 total (was 0)  |
   | +1 :green_heart: |  mvnsite  |   1m 26s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   0m 55s |  |  the patch passed with JDK Ubuntu-11.0.16+8-post-Ubuntu-0ubuntu120.04  |
   | +1 :green_heart: |  javadoc  |   1m 27s |  |  the patch passed with JDK Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07  |
   | +1 :green_heart: |  spotbugs  |   3m 28s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  22m 54s |  |  patch has no errors when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  | 238m 55s |  |  hadoop-hdfs in the patch passed.  |
   | +1 :green_heart: |  asflicense  |   1m  7s |  |  The patch does not generate ASF License warnings.  |
   |  |   | 348m  1s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4901/2/artifact/out/Dockerfile |
   | GITHUB PR | https://github.com/apache/hadoop/pull/4901 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets |
   | uname | Linux f257db2e44d1 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 / 5b4abf4b7a804fdca0db78107d73ebe65cea719b |
   | Default Java | Private Build-1.8.0_342-8u342-b07-0ubuntu1~20.04-b07 |
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   |  Test Results | https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4901/2/testReport/ |
   | Max. process+thread count | 3649 (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-4901/2/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.
   
   


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