Raymond Liu created HBASE-8001:
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Summary: Avoid unnecessary lazy seek
Key: HBASE-8001
URL: https://issues.apache.org/jira/browse/HBASE-8001
Project: HBase
Issue Type: Bug
Components: regionserver
Affects Versions: 0.94.5
Reporter: Raymond Liu
Assignee: Raymond Liu
Fix For: 0.98.0
Lazy seek helps to reduce the real seek needed for multi hfile, when the kv
from newer hfile is enough to satisfy the query.
While in many case, it just push the real seek later, and do not reduce the
number of real seek. e.g. there are only one hfile, or storefilescanner is
closed and only one left, or the scan need to go through all the versions, all
there are only one version of row and a sequence scan is performed. In these
case, lazy seek just bring extra overhead.
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