Ashutosh Jindal created HBASE-6390:
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Summary: append() and increment() may result in inconsistent
result on retries.
Key: HBASE-6390
URL: https://issues.apache.org/jira/browse/HBASE-6390
Project: HBase
Issue Type: Bug
Affects Versions: 0.94.0, 0.96.0
Reporter: Ashutosh Jindal
append() and increment() api can give inconsistent result in following
scenarios :
1- For eg, if the client does not receive the response in the specified time,
it retries. Now the first call to increment/append is already done and this
retry will again make the operation to succeed.
2- Now if the sync() to WAL fails we get an IOException, on getting an
exception there is a retry done which again results in the doing the
increment/append again.
When may need some sort of roll back for the second problem.
For the first one we need to see how to handle this.
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