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From "Chun Chang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-1894) Complex JSON cause NPE
Date Thu, 18 Dec 2014 23:20:15 GMT
Chun Chang created DRILL-1894:
---------------------------------

             Summary: Complex JSON cause NPE
                 Key: DRILL-1894
                 URL: https://issues.apache.org/jira/browse/DRILL-1894
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 0.7.0
            Reporter: Chun Chang


#Tue Dec 16 13:28:01 EST 2014
git.commit.id.abbrev=3b0ff5d

Have the following JSON record (actual dataset too big):

{code}
{
    "id": 2,
    "oooa": {
        "oa": {
            "oab": {
                "oabc": [
                    {
                        "rowId": 2
                    },
                    {
                        "rowValue1": 2,
                        "rowValue2": 2
                    }
                ]
            }
        }
    }
}
{code}

The following query caused NPE:

{code}
SELECT   t.id, 
         t.oooa.oa.oab.oabc, 
         t.oooa.oa.oab.oabc[1].rowvalue2 
FROM     `complex.json` t 
ORDER BY t.oooa.oa.oab.oabc[1].rowvalue2 limit 50;
{code}

{code}
0: jdbc:drill:schema=dfs.drillTestDirComplexJ> select t.id, t.oooa.oa.oab.oabc, t.oooa.oa.oab.oabc[1].rowValue2
from `complex.json` t order by t.oooa.oa.oab.oabc[1].rowValue2 limit 50;
Query failed: Query failed: Failure while running fragment.[ 8a2ee7e8-8c7b-4881-883e-7924884a0878
on qa-node117.qa.lab:31010 ]
[ 8a2ee7e8-8c7b-4881-883e-7924884a0878 on qa-node117.qa.lab:31010 ]


Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}

stack trace:

{code}
2014-12-18 15:11:54,916 [2b6ca0c5-5b7d-3832-091f-67b37d4e3e6c:frag:1:2] WARN  o.a.d.e.w.fragment.FragmentExecutor
- Error while initializing or executing fragment
java.lang.NullPointerException: null
2014-12-18 15:11:54,916 [2b6ca0c5-5b7d-3832-091f-67b37d4e3e6c:frag:1:2] ERROR o.a.drill.exec.ops.FragmentContext
- Fragment Context received failure.
java.lang.NullPointerException: null
2014-12-18 15:11:54,916 [2b6ca0c5-5b7d-3832-091f-67b37d4e3e6c:frag:1:2] ERROR o.a.d.e.w.f.AbstractStatusReporter
- Error 798d65b7-9cfb-4276-a50a-e9bae311a7ec: Failure while running fragment.
java.lang.NullPointerException: null
2014-12-18 15:11:54,920 [2b6ca0c5-5b7d-3832-091f-67b37d4e3e6c:frag:2:0] ERROR o.a.d.e.p.i.p.StatusHandler
- Failure while sending data to user.
org.apache.drill.exec.rpc.RpcException: Interrupted while trying to get sending semaphore.
	at org.apache.drill.exec.rpc.data.DataTunnel.sendRecordBatch(DataTunnel.java:52) [drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	at org.apache.drill.exec.test.generated.PartitionerGen609$OutgoingRecordBatch.flush(PartitionerTemplate.java:320)
[na:na]
	at org.apache.drill.exec.test.generated.PartitionerGen609.flushOutgoingBatches(PartitionerTemplate.java:134)
[na:na]
	at org.apache.drill.exec.physical.impl.partitionsender.PartitionSenderRootExec.innerNext(PartitionSenderRootExec.java:176)
[drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:57) [drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:114) [drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	at org.apache.drill.exec.work.WorkManager$RunnableWrapper.run(WorkManager.java:254) [drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
	at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
Caused by: java.lang.InterruptedException: null
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1301)
~[na:1.7.0_45]
	at java.util.concurrent.Semaphore.acquire(Semaphore.java:317) ~[na:1.7.0_45]
	at org.apache.drill.exec.rpc.data.DataTunnel.sendRecordBatch(DataTunnel.java:49) [drill-java-exec-0.7.0-SNAPSHOT-rebuffed.jar:0.7.0-SNAPSHOT]
	... 9 common frames omitted
{code}

physical plan:

{code}
0: jdbc:drill:schema=dfs.drillTestDirComplexJ> explain plan for select t.id, t.oooa.oa.oab.oabc,
t.oooa.oa.oab.oabc[1].rowValue2 from `complex.json` t order by t.oooa.oa.oab.oabc[1].rowValue2
limit 50;
+------------+------------+
|    text    |    json    |
+------------+------------+
| 00-00    Screen
00-01      Project(id=[$0], EXPR$1=[$1], EXPR$2=[$2])
00-02        SelectionVectorRemover
00-03          Limit(fetch=[50])
00-04            SingleMergeExchange(sort0=[2 ASC])
01-01              SelectionVectorRemover
01-02                TopN(limit=[50])
01-03                  HashToRandomExchange(dist0=[[$2]])
02-01                    Project(id=[$1], EXPR$1=[ITEM(ITEM(ITEM($0, 'oa'), 'oab'), 'oabc')],
EXPR$2=[ITEM(ITEM(ITEM(ITEM(ITEM($0, 'oa'), 'oab'), 'oabc'), 1), 'rowValue2')])
02-02                      Scan(groupscan=[EasyGroupScan [selectionRoot=/drill/testdata/complex_type/json/complex.json,
numFiles=1, columns=[`id`, `oooa`.`oa`.`oab`.`oabc`, `oooa`.`oa`.`oab`.`oabc`[1].`rowValue2`],
files=[maprfs:/drill/testdata/complex_type/json/complex.json]]])
 | {
{code}



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