Duo Zhang created HBASE-27146:
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             Summary: Avoid CellUtil.cloneRow in MetaCellComparator
                 Key: HBASE-27146
                 URL: https://issues.apache.org/jira/browse/HBASE-27146
             Project: HBase
          Issue Type: Improvement
            Reporter: Duo Zhang


In HBASE-26981, a flame graph shows that we spend a lot of CPUs in 
CellUtils.cloneXXX.

Since we need to split the row to different parts when comparing, we can not 
use ByteBuffer compare directly, but as least, we should try to avoid copy the 
content when the Cell is stored in a ByteBuffer.



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