Jianwei Cui created HBASE-15497:
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Summary: Incorrect javadoc for atomicity guarantee of Increment
and Append
Key: HBASE-15497
URL: https://issues.apache.org/jira/browse/HBASE-15497
Project: HBase
Issue Type: Bug
Components: documentation
Affects Versions: 2.0.0
Reporter: Jianwei Cui
Priority: Minor
At the front of {{Increment.java}} file, there is comment about read atomicity:
{code}
* This operation does not appear atomic to readers. Increments are done
* under a single row lock, so write operations to a row are synchronized, but
* readers do not take row locks so get and scan operations can see this
* operation partially completed.
{code}
It seems this comment is not true after MVCC integrated
[HBASE-4583|https://issues.apache.org/jira/browse/HBASE-4583]. Currently, the
readers can be guaranteed to read the whole result of Increment if I am not
wrong. Similar comments also exist in {{Append.java}}, {{Table#append(...)}}
and {{Table#increment(...)}}
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