[jira] [Created] (HBASE-10699) Optimize some code

[Yi Deng (JIRA)]

Yi Deng created HBASE-10699:
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             Summary: Optimize some code
                 Key: HBASE-10699
                 URL: https://issues.apache.org/jira/browse/HBASE-10699
             Project: HBase
          Issue Type: Improvement
            Reporter: Yi Deng


1. Set capacity on ArrayList when possible
2. Use isEmpty instead of size() == 0 when possible
3. Reduce some unnecessary allocation



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