Yuefeng Wang created HBASE-26239:
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Summary: Return incorrect result for a scan rpc call when readType
switch from pread to stream
Key: HBASE-26239
URL: https://issues.apache.org/jira/browse/HBASE-26239
Project: HBase
Issue Type: Bug
Components: scan, Scanners
Reporter: Yuefeng Wang
Scan's default readType is PREAD, and there is a readType transform from PREAD
to STREAM when a long scan is executed. E.G. I ask for result of 'count table',
and now it will return immediately before the RPC get real data because of this
transform, so the result returned maybe incorrect. Although, we can explicitly
use STREAM instead of PREAD to avoid this transform. I am still confused, how
can we judge whether transform is called? How can I trust my result is real
when we allow transform occur?
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