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Posted to issues@hbase.apache.org by GitBox <gi...@apache.org> on 2022/03/29 13:53:15 UTC

[GitHub] [hbase] eomiks opened a new pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

eomiks opened a new pull request #4295:
URL: https://github.com/apache/hbase/pull/4295


   since  [HBASE-15616](https://issues.apache.org/jira/browse/HBASE-15616), setting column qualifier as null is possible.
   
   but when NewVersionBehavior is on, delete with null columnQualifier occurs NullPointerException.
   
   
   ```java
   @Test
   public void testNullColumnQualifier() throws IOException {
     try (Table t = createTable()) {
       Delete del = new Delete(ROW);
       del.addColumn(FAMILY, null);
       t.delete(del);
       Result r = t.get(new Get(ROW)); //NPE happens.
       assertTrue(r.isEmpty());
     }
   } 
   ```
   
   * stacktrace
   ```
   Caused by: java.lang.NullPointerException at org.apache.hadoop.hbase.regionserver.querymatcher.NewVersionBehaviorTracker.add(NewVersionBehaviorTracker.java:214) at org.apache.hadoop.hbase.regionserver.querymatcher.NormalUserScanQueryMatcher.match(NormalUserScanQueryMatcher.java:73) at org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:627) at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:157) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:6672) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:6836) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:6606) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:6583) at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.next(HRegion.java:6570) at org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:26
 45) at org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:2571) at org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42274) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:418) ... 3 more
   ```
   
   
    
   NPE happens because delColMap is not initialized and empty.
   in this case delColMap.ceilingEntry for empty returns null and NPE happens.
   https://github.com/apache/hbase/blob/1efd8fe53c13cdbfde7cb3d0ff7ebea7b8b7d3bb/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/NewVersionBehaviorTracker.java#L214
   
   delColMap expected to be initialized (deep copying of delFamMap) when columnQualifier is changed.
   But, when null columnQualifier is presented, matchingCq == true and delColMap is never initialized for null columnQualifier deletes.
   https://github.com/apache/hbase/blob/1efd8fe53c13cdbfde7cb3d0ff7ebea7b8b7d3bb/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/NewVersionBehaviorTracker.java#L168-L169
   
   I changed to initialize delColMap if  null columnQualifier is presented.
   and only if cell is not for columnFamily or columnFamilfyVersion tombstone which is no need to initialize delColMap (for the performance).
   ```
     private boolean isColumnQualifierChanged(Cell cell) {
       if (delColMap.isEmpty()
           && (PrivateCellUtil.isDeleteColumns(cell) || PrivateCellUtil.isDeleteColumnVersion(cell))) {
         // for null columnQualifier
         return true;
       }
       return !PrivateCellUtil.matchingQualifier(cell, lastCqArray, lastCqOffset, lastCqLength);
     }
   ```
   
   I inverted ```matchCq``` to  ```isColumnQualifierChanged``` and reformed if/else statement, I thought it's more clear and fit for purpose.
   
   
   


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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1082177921


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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1082175044


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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1081940719


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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1082737992


   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1082694997


   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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[GitHub] [hbase] Apache-HBase commented on pull request #4295: HBASE-26901 delete with null columnQualifier occurs NullPointerException when NewVersionBehavior is on

Posted by GitBox <gi...@apache.org>.
Apache-HBase commented on pull request #4295:
URL: https://github.com/apache/hbase/pull/4295#issuecomment-1082590333


   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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   | +1 :green_heart: |  asflicense  |   0m  7s |  The patch does not generate ASF License warnings.  |
   |  |   |  29m 45s |   |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4295/2/artifact/yetus-general-check/output/Dockerfile |
   | GITHUB PR | https://github.com/apache/hbase/pull/4295 |
   | Optional Tests | dupname asflicense javac spotbugs hadoopcheck hbaseanti checkstyle compile |
   | uname | Linux 600cec3cba6d 5.4.0-1025-aws #25~18.04.1-Ubuntu SMP Fri Sep 11 12:03:04 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/hbase-personality.sh |
   | git revision | master / 7adccd2a19 |
   | Default Java | AdoptOpenJDK-1.8.0_282-b08 |
   | Max. process+thread count | 60 (vs. ulimit of 30000) |
   | modules | C: hbase-server U: hbase-server |
   | Console output | https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4295/2/console |
   | versions | git=2.17.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   


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