Jianwei Cui created HBASE-16423:
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Summary: Add re-compare option to VerifyReplication to avoid
occasional inconsistent rows
Key: HBASE-16423
URL: https://issues.apache.org/jira/browse/HBASE-16423
Project: HBase
Issue Type: Improvement
Components: Replication
Affects Versions: 2.0.0
Reporter: Jianwei Cui
Priority: Minor
Because replication keeps eventually consistency, VerifyReplication may report
inconsistent rows if there are data being written to source or peer clusters
during scanning. These occasionally inconsistent rows will have the same data
if we do the comparison again after a short period. It is not easy to find the
really inconsistent rows if VerifyReplication report a large number of such
occasionally inconsistency. To avoid this case, we can add an option to make
VerifyReplication read out the inconsistent rows again after sleeping a few
seconds and re-compare the rows during scanning. This behavior follows the
eventually consistency of hbase's replication. Suggestions and discussions are
welcomed.
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