[GitHub] drill pull request #800: DRILL-5385: Vector serializer fails to read saved S...

[Ben-Zvi <gi...@git.apache.org>]

Github user Ben-Zvi commented on a diff in the pull request:

    https://github.com/apache/drill/pull/800#discussion_r114036665
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/cache/VectorAccessibleSerializable.java ---
    @@ -146,36 +157,24 @@ public void writeToStream(OutputStream output) throws IOException {
         final DrillBuf[] incomingBuffers = batch.getBuffers();
         final UserBitShared.RecordBatchDef batchDef = batch.getDef();
     
    -    /* DrillBuf associated with the selection vector */
    -    DrillBuf svBuf = null;
    -    Integer svCount =  null;
    -
    -    if (svMode == BatchSchema.SelectionVectorMode.TWO_BYTE) {
    -      svCount = sv2.getCount();
    -      svBuf = sv2.getBuffer(); //this calls retain() internally
    -    }
    -
         try {
           /* Write the metadata to the file */
           batchDef.writeDelimitedTo(output);
     
           /* If we have a selection vector, dump it to file first */
    -      if (svBuf != null) {
    -        allocator.write(svBuf, output);
    -        sv2.setBuffer(svBuf);
    -        svBuf.release(); // sv2 now owns the buffer
    -        sv2.setRecordCount(svCount);
    +      if (svMode == BatchSchema.SelectionVectorMode.TWO_BYTE) {
    +        recordCount = sv2.getCount();
    --- End diff --
    
    Ultra minor comment: When SV2 is read, the recordCount comes from the batchDef; here it is taken from the sv2 itself (they should be the same anyway ....)


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