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https://issues.apache.org/jira/browse/HBASE-24831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17196073#comment-17196073
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Viraj Jasani edited comment on HBASE-24831 at 9/15/20, 11:38 AM:
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Reopening since this is breaking source compatibility by removing protected
methods of IA.Public org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl.
Checked PR discussion but compatibility is not mentioned. Maybe an oversight?
FYI [~zhangduo] [~zghao] [~ndimiduk]
was (Author: vjasani):
Reopening since this is breaking source compatibility by removing protected
methods of IA.Public org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl.
Checked PR discussion but compatibility is not mentioned. Maybe an oversight?
> Avoid invoke Counter using reflection in SnapshotInputFormat
> -------------------------------------------------------------
>
> Key: HBASE-24831
> URL: https://issues.apache.org/jira/browse/HBASE-24831
> Project: HBase
> Issue Type: Improvement
> Reporter: Yechao Chen
> Assignee: Yechao Chen
> Priority: Major
> Labels: Performance, mapreduce, snapshot
> Fix For: 3.0.0-alpha-1, 2.4.0, 2.3.2
>
>
> In TableRecordReaderImpl we invoke Counter increment by reflection
> This will be called nextKeyValue() in TableSnapshotInputFormat
> reflection invoke is very slower than normal method call
> we can avoid these to improve the read performance
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