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https://issues.apache.org/jira/browse/HBASE-28302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17809979#comment-17809979
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ASF GitHub Bot commented on HBASE-28302:
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bbeaudreault commented on PR #5622:
URL: https://github.com/apache/hbase/pull/5622#issuecomment-1906229934

   Thanks for the review! Yea it's pretty annoying to handle thrift, since I 
needed to go figure out how to generate them. But that seems to be how it works 
today. We could probably try to give it the protobuf-like treatment in a 
separate jira if anyone wants to improve the thrift build.




> Add tracking of fs read times in ScanMetrics and slow logs
> ----------------------------------------------------------
>
>                 Key: HBASE-28302
>                 URL: https://issues.apache.org/jira/browse/HBASE-28302
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Bryan Beaudreault
>            Priority: Major
>
> We've had this in our production for a while, and it's useful info to have. 
> We already track FS read times in 
> [HFileBlock|https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java#L1828-L1831C10].
>  We can project that into the ScanMetrics instance and slow log pretty 
> easily. It is also helpful to add a slow.fs.read.threshold, over which we log 
> a warn



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