[jira] [Commented] (HBASE-5564) Bulkload is discarding duplicate records

["Laxman (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-5564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13227597#comment-13227597 ] 

Laxman commented on HBASE-5564:
-------------------------------

I think this is a bug and its not any intentional behavior. 

Usage of TreeSet in the below code snippet is causing the issue.

PutSortReducer.reduce()
======================
      TreeSet<KeyValue> map = new TreeSet<KeyValue>(KeyValue.COMPARATOR);
      long curSize = 0;
      // stop at the end or the RAM threshold
      while (iter.hasNext() && curSize < threshold) {
        Put p = iter.next();
        for (List<KeyValue> kvs : p.getFamilyMap().values()) {
          for (KeyValue kv : kvs) {
            map.add(kv);
            curSize += kv.getLength();
          }
        }

Changing this back to List and then sort explicitly will solve the issue.
                
> Bulkload is discarding duplicate records
> ----------------------------------------
>
>                 Key: HBASE-5564
>                 URL: https://issues.apache.org/jira/browse/HBASE-5564
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 0.90.7, 0.92.2, 0.94.0, 0.96.0
>         Environment: HBase 0.92
>            Reporter: Laxman
>            Assignee: Laxman
>              Labels: bulkloader
>
> Duplicate records are getting discarded when duplicate records exists in same input file and more specifically if they exists in same split.
> Duplicate records are considered if the records are from diffrent different splits.
> Version under test: HBase 0.92

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