Kadir Ozdemir created PHOENIX-6776:
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Summary: Abort scans of closed connections at
ScanningResultIterator
Key: PHOENIX-6776
URL: https://issues.apache.org/jira/browse/PHOENIX-6776
Project: Phoenix
Issue Type: Improvement
Reporter: Kadir Ozdemir
The server side paging feature introduced by Phoenix-6211 breaks a scan into
timed scan operations on the server side and returns an intermediate result for
each operation. This intermediate result could be a valid result or a dummy
result. The HBase scans are wrapped by ScanningResultIterator in Phoenix. If
the next call on a scan returns a dummy or empty result, ScanningResultIterator
ignores this result and call the next method on the scan again. However, if the
Phoenix connection is closed, we should abort the scan instead of continuing
scanning. This will result in timely abort of scans and release of resources
(especially when phoenix.server.page.size.ms is set to a small value, e.g., 5
sec).
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