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https://issues.apache.org/jira/browse/HBASE-22888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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chenxu updated HBASE-22888:
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Description: When switching pread to stream read, new HFileReaderImpl will
be create, but the two different readers do not share informations with each
other. maybe we can divide HFileReaderImpl into two different class, such as
HFilePreadReader and HFileStreamReader. When constructing HFileStreamReader, it
will copy some stuffs (fileInfo, index, etc) from an already existing Reader,
and no need to do prefetch operations. (was: When switching from pread to
stream read, new HFileReaderImpl will be created，and Prefetch will be executed
again.)
> Use separate classe to deal with streaming read and pread
> ---------------------------------------------------------
>
> Key: HBASE-22888
> URL: https://issues.apache.org/jira/browse/HBASE-22888
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: chenxu
> Priority: Major
>
> When switching pread to stream read, new HFileReaderImpl will be create, but
> the two different readers do not share informations with each other. maybe we
> can divide HFileReaderImpl into two different class, such as HFilePreadReader
> and HFileStreamReader. When constructing HFileStreamReader, it will copy some
> stuffs (fileInfo, index, etc) from an already existing Reader, and no need to
> do prefetch operations.
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