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From "Shrijeet Paliwal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6493) HashSet of byte array is being used in couple of places
Date Wed, 01 Aug 2012 22:44:02 GMT
Shrijeet Paliwal created HBASE-6493:

             Summary: HashSet of byte array is being used in couple of places
                 Key: HBASE-6493
                 URL: https://issues.apache.org/jira/browse/HBASE-6493
             Project: HBase
          Issue Type: Bug
            Reporter: Shrijeet Paliwal
            Priority: Minor

While working on a jira I realized I had made a mistake of making a HashSet of byte array.

Then out of curiosity I checked if we do same any where else in code base. I came with following

# /src/main/java/org/apache/hadoop/hbase/mapreduce/RowCounter.java:    Set<byte []>
qualifiers = new HashSet<byte[]>();
# /src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java:        columnFamilies
= new HashSet<byte[]>();
# /src/test/java/org/apache/hadoop/hbase/filter/TestFirstKeyValueMatchingQualifiersFilter.java:
   Set<byte[]> quals = new HashSet<byte[]>();
# /src/test/java/org/apache/hadoop/hbase/regionserver/metrics/TestSchemaMetrics.java:    Set<byte[]>
families = new HashSet<byte[]>();
(1) and (3) are mine and I will fix them (not yet committed). Quoting the exact reference
from (2) below :

  public GetStoreFileResponse getStoreFile(final RpcController controller,          
      final GetStoreFileRequest request) throws ServiceException {              
    try {                                                                       
      HRegion region = getRegion(request.getRegion());                          
      Set<byte[]> columnFamilies = null;                                        
      if (request.getFamilyCount() == 0) {                                      
        columnFamilies = region.getStores().keySet();                           
      } else {                                                                  
        columnFamilies = new HashSet<byte[]>();                                 
        for (ByteString cf: request.getFamilyList()) {                          

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