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https://issues.apache.org/jira/browse/DRILL-1239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14091183#comment-14091183
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Hanifi Gunes commented on DRILL-1239:
-------------------------------------
Issue was related to overflown buffers. Fix enforces writers to stop pushing
more data to the buffer.
> java.lang.AssertionError When performing select against nested JSON > 60,000
> records
> ------------------------------------------------------------------------------------
>
> Key: DRILL-1239
> URL: https://issues.apache.org/jira/browse/DRILL-1239
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - JSON
> Affects Versions: 0.4.0
> Environment: Seen both on standalone (OSX host, 16 GB RAM) as well as
> on cluster in AWS:
> 5 nodes, centos-6.5, 64GB RAM, 2 SSD's/node for mfs/dfs. Running MapR 3.1.1.
> Reporter: Andy Pernsteiner
> Assignee: DrillCommitter
> Attachments: DRILL-1239.1.patch.txt
>
>
> Using a JSON file with contents like so for each record:
> {code}:
> {"trans_id":999999,"date":"11/03/2012","time":"09:07:05","user_info":{"cust_id":2,"device":"AOS4.3","state":"tx"},"marketing_info":{"camp_id":14,"keywords":["it","i","wants","yes","things","few","like"]},"trans_info":{"prod_id":[167,145,5,487,290],"purch_flag":"false"}}
> {code}
> First I set the following to get more verbose output:
> {quote}
> 0: jdbc:drill:> alter session set `exec.errors.verbose`=true;
> {quote}
> Then performed a simple select via sqlline:
> {quote}
> select * from dfs.`/mapr/drillram/JSON/large/mobile.json`;
> <50,000+ rows of output>
> | 56184 | 03/11/2013 | 14:19:10 |
> {"cust_id":4,"device":"IOS5","state":"va"} |
> {"camp_id":15,"keywords":["young"]} | {"prod_id |
> | 56185 | 07/03/2013 | 14:30:38 |
> {"cust_id":1518,"device":"AOS4.4","state":"wi"} |
> {"camp_id":11,"keywords":["so","way","okay |
> | 56186 | 07/07/2013 | 10:41:04 |
> {"cust_id":97279,"device":"IOS5","state":"ga"} | {"camp_id":7,"keywords":[]}
> | {"prod_id":[9 |
> Query failed: Failure while running fragment. null
> [4407eef7-06aa-4cf9-9962-a2f187ce8f17]
> Node details: ip-172-16-1-111:31011/31012
> java.lang.AssertionError
> at
> org.apache.drill.exec.vector.complex.WriteState.fail(WriteState.java:37)
> at
> org.apache.drill.exec.vector.complex.impl.AbstractBaseWriter.inform(AbstractBaseWriter.java:62)
> at
> org.apache.drill.exec.vector.complex.impl.RepeatedBigIntWriterImpl.inform(RepeatedBigIntWriterImpl.java:108)
> at
> org.apache.drill.exec.vector.complex.impl.RepeatedBigIntWriterImpl.setPosition(RepeatedBigIntWriterImpl.java:130)
> at
> org.apache.drill.exec.vector.complex.impl.SingleListWriter.setPosition(SingleListWriter.java:700)
> at
> org.apache.drill.exec.vector.complex.impl.SingleMapWriter.setPosition(SingleMapWriter.java:153)
> at
> org.apache.drill.exec.vector.complex.impl.SingleMapWriter.setPosition(SingleMapWriter.java:153)
> at
> org.apache.drill.exec.vector.complex.impl.VectorContainerWriter.setPosition(VectorContainerWriter.java:66)
> at
> org.apache.drill.exec.store.easy.json.JSONRecordReader2.next(JSONRecordReader2.java:80)
> at
> org.apache.drill.exec.physical.impl.ScanBatch.next(ScanBatch.java:148)
> at
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:116)
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:59)
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:98)
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:49)
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:116)
> at
> org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:250)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> java.lang.RuntimeException: java.sql.SQLException: Failure while trying to
> get next result batch.
> at sqlline.SqlLine$IncrementalRows.hasNext(SqlLine.java:2514)
> at sqlline.SqlLine$TableOutputFormat.print(SqlLine.java:2148)
> at sqlline.SqlLine.print(SqlLine.java:1809)
> at sqlline.SqlLine$Commands.execute(SqlLine.java:3766)
> at sqlline.SqlLine$Commands.sql(SqlLine.java:3663)
> at sqlline.SqlLine.dispatch(SqlLine.java:889)
> at sqlline.SqlLine.begin(SqlLine.java:763)
> at sqlline.SqlLine.start(SqlLine.java:498)
> at sqlline.SqlLine.main(SqlLine.java:460)
> {quote}
> If I re-run the same query against a smaller version of the same dataset
> (<50,000 records), I don't have the issue. So far I've tried modifying the
> DRILL_MAX_DIRECT_MEMORY and
> DRILL_MAX_HEAP variables to see if I could find something that works, but
> neither seem to make a difference. Note: the error appears the same if I run
> on standalone mode.
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