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https://issues.apache.org/jira/browse/DRILL-5544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16039172#comment-16039172
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ASF GitHub Bot commented on DRILL-5544:
---------------------------------------
Github user vdiravka commented on a diff in the pull request:
https://github.com/apache/drill/pull/846#discussion_r119834619
--- Diff:
exec/java-exec/src/main/java/org/apache/parquet/hadoop/ParquetColumnChunkPageWriteStore.java
---
@@ -0,0 +1,269 @@
+/*
--- End diff --
See below my answers regarding to the using of memory by parquet library.
> Out of heap running CTAS against text delimited
> -----------------------------------------------
>
> Key: DRILL-5544
> URL: https://issues.apache.org/jira/browse/DRILL-5544
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Parquet
> Affects Versions: 1.10.0
> Environment: - 2 or 4 nodes cluster
> - 4G or 8G of Java heap and more than 8G of direct memory
> - planner.width.max_per_node = 40
> - store.parquet.compression = none
> To generate lineitem.tbl file unzip dbgen.tgz archive and run:
> {code}dbgen -TL -s 500{code}
> Reporter: Vitalii Diravka
> Assignee: Vitalii Diravka
> Fix For: 1.11.0
>
> Attachments: dbgen.tgz
>
>
> This query causes the drillbit to hang:
> {code}
> create table xyz as
> select
> cast(columns[0] as bigint) l_orderkey,
> cast(columns[1] as integer) l_poartkey,
> cast(columns[2] as integer) l_suppkey,
> cast(columns[3] as integer) l_linenumber,
> cast(columns[4] as double) l_quantity,
> cast(columns[5] as double) l_extendedprice,
> cast(columns[6] as double) l_discount,
> cast(columns[7] as double) l_tax,
> cast(columns[8] as char(1)) l_returnflag,
> cast(columns[9] as char(1)) l_linestatus,
> cast(columns[10] as date) l_shipdate,
> cast(columns[11] as date) l_commitdate,
> cast(columns[12] as date) l_receiptdate,
> cast(columns[13] as char(25)) l_shipinstruct,
> cast(columns[14] as char(10)) l_shipmode,
> cast(columns[15] as varchar(44)) l_comment
> from
> `lineitem.tbl`;
> {code}
> OOM "Java heap space" from the drillbit.log:
> {code:title=drillbit.log|borderStyle=solid}
> ...
> 2017-02-07 22:38:11,031 [2765b496-0b5b-a3df-c252-a8bb9cd2e52f:frag:1:53]
> DEBUG o.a.d.e.s.p.ParquetDirectByteBufferAllocator -
> ParquetDirectByteBufferAllocator: Allocated 209715 bytes. Allocated
> ByteBuffer id: 1563631814
> 2017-02-07 22:38:16,478 [2765b496-0b5b-a3df-c252-a8bb9cd2e52f:frag:1:1] ERROR
> o.a.d.exec.server.BootStrapContext -
> org.apache.drill.exec.work.WorkManager$WorkerBee$1.run() leaked an exception.
> java.lang.OutOfMemoryError: Java heap space
> 2017-02-07 22:38:17,391 [2765b496-0b5b-a3df-c252-a8bb9cd2e52f:frag:1:13]
> ERROR o.a.drill.common.CatastrophicFailure - Catastrophic Failure Occurred,
> exiting. Information message: Unable to handle out of memory condition in
> FragmentExecutor.
> ...
> {code}
> To reproduce the issue please see environment details.
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