Sandhya Sundaresan created TRAFODION-2950:

             Summary: LOB:External LOB implementation should allow for mergin 
external files
                 Key: TRAFODION-2950
             Project: Apache Trafodion
          Issue Type: Improvement
          Components: sql-exe
    Affects Versions: any
            Reporter: Sandhya Sundaresan
            Assignee: Sandhya Sundaresan

Today each lobHandle of an external file  *__* points to a unique  HDFS file. 
This causes the Namenode to run out of space to hold thousands  of files. So we 
could provide a utility to merge the external lob files into one larger HDFS 
file ( belonging to a LOB column ) and readjust the entries in the LOB 
descriptor metadata tables to now contain one  *__* HDFS file and pointers to 
offsets within that file rather than separate files.


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