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From "Divya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5739) Query reads all files after issuing REFRESH TABLE METADATA command
Date Thu, 24 Aug 2017 02:51:00 GMT
Divya created DRILL-5739:
----------------------------

             Summary: Query reads all files after issuing REFRESH TABLE METADATA command 
                 Key: DRILL-5739
                 URL: https://issues.apache.org/jira/browse/DRILL-5739
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.10.0
            Reporter: Divya


Hi,
Query takes lot of time after issuing refresh metadata command as it is reading all the files
.

||Value||Before Refresh Metadata||After Refresh Metadata||
|Fragments|1|13|
|DURATION|01 min 0.233 sec|18 min 0.744 sec|
|PLANNING|59.818 sec|33.087 sec|
|QUEUED|Not Available|Not Available|
|EXECUTION|0.415 sec|17 min 27.657 sec|

I cant paste the whole physical plan for the query 
Pasting the relevant one :
*Physical Plan Before  Refresh Meta *
numFiles=4, usedMetadataFile=false, columns=

rowcount = 12.0, cumulative cost = {12.0 rows, 780.0 cpu, 0.0 io, 0.0 network, 0.0 memory},
id = 9395

*Physical Plan After Refresh Meta *
numFiles=102290, usedMetadataFile=true, cacheFileRoot=<Path to file >

rowcount = 1182008.0, cumulative cost = {1182008.0 rows, 7.683052E7 cpu, 0.0 io, 0.0 network,
0.0 memory}, id = 9685


*Additional Info :*
file format - Parquet
table - partitioned by year,month,day,hour 
query format - selecting all the columns with by using partition column in where conditions
 











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