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From "Vinoth Chandar (Jira)" <j...@apache.org>
Subject [jira] [Updated] (HUDI-637) Investigate slower hudi queries in S3 vs HDFS
Date Wed, 04 Mar 2020 05:08:00 GMT

     [ https://issues.apache.org/jira/browse/HUDI-637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinoth Chandar updated HUDI-637:
--------------------------------
    Priority: Major  (was: Blocker)

> Investigate slower hudi queries in S3 vs HDFS
> ---------------------------------------------
>
>                 Key: HUDI-637
>                 URL: https://issues.apache.org/jira/browse/HUDI-637
>             Project: Apache Hudi (incubating)
>          Issue Type: Task
>          Components: Performance
>            Reporter: Balaji Varadarajan
>            Priority: Major
>             Fix For: 0.5.2
>
>
> Hudi queries in S3 takes abnormally longer time compared to hdfs. 
> S3 listing itself is not taking that long of time. 
> PERFORMANCE BUG:
> the metadata list performance is likely causing performance issues with hudi.
>  
> {{scala> stopwatch(\{ sql("SELECT * FROM ap_invoices_all_compacted_s3").count})}}
> {{Elapsed time: 1m 55.078473113s 
>  res2: Long = xxxxxxxxxxxx}}
> {{}}
> {{scala> stopwatch(\{ sql("SELECT * FROM ap_invoices_all_compacted").count}) – this
is the exact same table in hdfs}}
> {{Elapsed time: 6.581217052s 
>  res3: Long = xxxxxxxxxxx}}



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