[jira] [Resolved] (DRILL-2865) Drillbit runs out of memory on multiple consecutive CTAS

["Jacques Nadeau (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-2865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacques Nadeau resolved DRILL-2865.
-----------------------------------
    Resolution: Pending Closed

Resolved by a combination of malloc changes and Parquet codec changes

> Drillbit runs out of memory on multiple consecutive CTAS
> --------------------------------------------------------
>
>                 Key: DRILL-2865
>                 URL: https://issues.apache.org/jira/browse/DRILL-2865
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 0.9.0
>            Reporter: Victoria Markman
>            Assignee: Steven Phillips
>             Fix For: 1.0.0
>
>         Attachments: drill-2865-no-compression.log, drillbit.log, scritpts.tar
>
>
> Hardware configuration:
>         - single node
>         - 64GB RAM
> Drill configuration
>         DRILL_MAX_DIRECT_MEMORY="8G"
>         DRILL_MAX_HEAP="4G"
>         `planner.enable_multiphase_agg` = false;
>         `store.parquet.block-size` = 134217728;
>         `planner.enable_mux_exchange` = false;
>         `exec.min_hash_table_size` = 67108864;
>         `planner.enable_hashagg` = true; 
>         `planner.width.max_per_node` = 23;
> Aggregation query on TPCDS scale factor 1: 
> {code}
>         select 
>                 ss_sold_date_sk , 
>                 ss_sold_time_sk , 
>                 ss_item_sk , 
>                 ss_customer_sk , 
>                 ss_cdemo_sk, 
>                 count(*) from store_sales
>         group by 
>                 ss_sold_date_sk , 
>                 ss_sold_time_sk , 
>                 ss_item_sk , 
>                 ss_customer_sk , 
>                 ss_cdemo_sk
> ;
> {code}
> 1. Executing CTAS with this query and store.format = 'parquet' fails on iteration #9 with this configuration consistently
> 2. Ran query by itself: 47 iterations successfully
> 3. Ran CTAS with this query and store.format = 'csv': - 30 iterations did not reproduce the problem
> Attached:
>       - drillbit.log
>       - scripts.tar (contains script that reproduces OOM)



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