[
https://issues.apache.org/jira/browse/DRILL-5778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Arina Ielchiieva updated DRILL-5778:
------------------------------------
Fix Version/s: (was: 1.12.0)
1.13.0
> Drill seems to run out of memory but completes execution
> --------------------------------------------------------
>
> Key: DRILL-5778
> URL: https://issues.apache.org/jira/browse/DRILL-5778
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.11.0
> Reporter: Robert Hou
> Assignee: Paul Rogers
> Fix For: 1.13.0
>
> Attachments: 264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0.sys.drill,
> drillbit.log
>
>
> Query is:
> {noformat}
> 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` = 2147483648;
> select count(*) from (select * from (select id, flatten(str_list) str from
> dfs.`/drill/testdata/resource-manager/flatten-large-small.json`) d order by
> d.str) d1 where d1.id=0;
> {noformat}
> Plan is:
> {noformat}
> | 00-00 Screen
> 00-01 Project(EXPR$0=[$0])
> 00-02 StreamAgg(group=[{}], EXPR$0=[$SUM0($0)])
> 00-03 UnionExchange
> 01-01 StreamAgg(group=[{}], EXPR$0=[COUNT()])
> 01-02 Project($f0=[0])
> 01-03 SelectionVectorRemover
> 01-04 Filter(condition=[=($0, 0)])
> 01-05 SingleMergeExchange(sort0=[1 ASC])
> 02-01 SelectionVectorRemover
> 02-02 Sort(sort0=[$1], dir0=[ASC])
> 02-03 Project(id=[$0], str=[$1])
> 02-04 HashToRandomExchange(dist0=[[$1]])
> 03-01 UnorderedMuxExchange
> 04-01 Project(id=[$0], str=[$1],
> E_X_P_R_H_A_S_H_F_I_E_L_D=[hash32AsDouble($1, 1301011)])
> 04-02 Flatten(flattenField=[$1])
> 04-03 Project(id=[$0], str=[$1])
> 04-04 Scan(groupscan=[EasyGroupScan
> [selectionRoot=maprfs:/drill/testdata/resource-manager/flatten-large-small.json,
> numFiles=1, columns=[`id`, `str_list`],
> files=[maprfs:///drill/testdata/resource-manager/flatten-large-small.json]]])
> {noformat}
> From drillbit.log:
> {noformat}
> 2017-09-08 05:07:21,515 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Actual batch schema & sizes {
> str(type: REQUIRED VARCHAR, count: 4096, std size: 54, actual size: 134,
> data size: 548360)
> id(type: OPTIONAL BIGINT, count: 4096, std size: 8, actual size: 9, data
> size: 36864)
> Records: 4096, Total size: 1073819648, Data size: 585224, Gross row width:
> 262163, Net row width: 143, Density: 1}
> 2017-09-08 05:07:21,515 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] ERROR
> o.a.d.e.p.i.x.m.ExternalSortBatch - Insufficient memory to merge two batches.
> Incoming batch size: 1073819648, available memory: 2147483648
> 2017-09-08 05:07:21,517 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] INFO
> o.a.d.e.c.ClassCompilerSelector - Java compiler policy: DEFAULT, Debug
> option: true
> 2017-09-08 05:07:21,517 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.compile.JaninoClassCompiler - Compiling (source size=3.3 KiB):
> ...
> 2017-09-08 05:07:21,536 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.exec.compile.ClassTransformer - Compiled and merged
> SingleBatchSorterGen2677: bytecode size = 3.6 KiB, time = 19 ms.
> 2017-09-08 05:07:21,566 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.t.g.SingleBatchSorterGen2677 - Took 5608 us to sort 4096 records
> 2017-09-08 05:07:21,566 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Input Batch Estimates: record size = 143
> bytes; net = 1073819648 bytes, gross = 1610729472, records = 4096
> 2017-09-08 05:07:21,566 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Spill batch size: net = 1048476 bytes,
> gross = 1572714 bytes, records = 7332; spill file = 268435456 bytes
> 2017-09-08 05:07:21,566 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Output batch size: net = 9371505 bytes,
> gross = 14057257 bytes, records = 65535
> 2017-09-08 05:07:21,566 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Available memory: 2147483648, buffer
> memory = 2143289744, merge memory = 2128740638
> 2017-09-08 05:07:21,571 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.t.g.SingleBatchSorterGen2677 - Took 4303 us to sort 4096 records
> 2017-09-08 05:07:21,571 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Input Batch Estimates: record size = 266
> bytes; net = 1073819648 bytes, gross = 1610729472, records = 4096
> 2017-09-08 05:07:21,571 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Spill batch size: net = 1048572 bytes,
> gross = 1572858 bytes, records = 3942; spill file = 268435456 bytes
> 2017-09-08 05:07:21,571 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Output batch size: net = 16777152 bytes,
> gross = 25165728 bytes, records = 63072
> 2017-09-08 05:07:21,571 [264d780f-41ac-2c4f-6bc8-bdbb5eeb3df0:frag:0:0] DEBUG
> o.a.d.e.p.i.x.m.ExternalSortBatch - Available memory: 2147483648, buffer
> memory = 2143289360, merge memory = 2113929344
> {noformat}
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