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From "Rahul Challapalli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5478) Spill file size parameter is not honored by the managed external sort
Date Fri, 05 May 2017 18:37:04 GMT
Rahul Challapalli created DRILL-5478:
----------------------------------------

             Summary: Spill file size parameter is not honored by the managed external sort
                 Key: DRILL-5478
                 URL: https://issues.apache.org/jira/browse/DRILL-5478
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Relational Operators
    Affects Versions: 1.10.0
            Reporter: Rahul Challapalli
            Assignee: Paul Rogers


git.commit.id.abbrev=1e0a14c

Query:
{code}
ALTER SESSION SET `exec.sort.disable_managed` = false;
alter session set `planner.width.max_per_node` = 1;
alter session set `planner.disable_exchanges` = true;
alter session set `planner.width.max_per_query` = 1;
alter session set `planner.memory.max_query_memory_per_node` = 1052428800;
alter session set `planner.enable_decimal_data_type` = true;
select count(*) from (
  select * from dfs.`/drill/testdata/resource-manager/all_types_large` d1
  order by d1.map.missing
) d;
{code}

Boot Options (spill file size is set to 256MB)
{code}
0: jdbc:drill:zk=10.10.100.190:5181> select * from sys.boot where name like '%spill%';
+--------------------------------------------------+---------+-------+---------+----------+----------------------------------------------------+-----------+------------+
|                       name                       |  kind   | type  | status  | num_val 
|                     string_val                     | bool_val  | float_val  |
+--------------------------------------------------+---------+-------+---------+----------+----------------------------------------------------+-----------+------------+
| drill.exec.sort.external.spill.directories       | STRING  | BOOT  | BOOT    | null    
| [
    # drill-override.conf: 26
    "/tmp/test"
]  | null      | null       |
| drill.exec.sort.external.spill.file_size         | STRING  | BOOT  | BOOT    | null    
| "256M"                                             | null      | null       |
| drill.exec.sort.external.spill.fs                | STRING  | BOOT  | BOOT    | null    
| "maprfs:///"                                       | null      | null       |
| drill.exec.sort.external.spill.group.size        | LONG    | BOOT  | BOOT    | 40000   
| null                                               | null      | null       |
| drill.exec.sort.external.spill.merge_batch_size  | STRING  | BOOT  | BOOT    | null    
| "16M"                                              | null      | null       |
| drill.exec.sort.external.spill.spill_batch_size  | STRING  | BOOT  | BOOT    | null    
| "8M"                                               | null      | null       |
| drill.exec.sort.external.spill.threshold         | LONG    | BOOT  | BOOT    | 40000   
| null                                               | null      | null       |
+--------------------------------------------------+---------+-------+---------+----------+----------------------------------------------------+-----------+------------+
{code}

Below are the spill files while the query is still executing. The size of the spill files
is ~34MB
{code}
-rwxr-xr-x   3 root root   34957815 2017-05-05 11:26 /tmp/test/26f33c36-4235-3531-aeaa-2c73dc4ddeb5_major0_minor0_op5_sort/run1
-rwxr-xr-x   3 root root   34957815 2017-05-05 11:27 /tmp/test/26f33c36-4235-3531-aeaa-2c73dc4ddeb5_major0_minor0_op5_sort/run2
-rwxr-xr-x   3 root root          0 2017-05-05 11:27 /tmp/test/26f33c36-4235-3531-aeaa-2c73dc4ddeb5_major0_minor0_op5_sort/run3
{code}

The data set is too large to attach here. Reach out to me if you need anything



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