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https://issues.apache.org/jira/browse/DRILL-4158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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john schneider updated DRILL-4158:
----------------------------------
Attachment: casetest-1.json
casetest-2.json
> Using CASE statement with heterogeneous schemas, NullPointers or returns
> Nonrelated error
> -----------------------------------------------------------------------------------------
>
> Key: DRILL-4158
> URL: https://issues.apache.org/jira/browse/DRILL-4158
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 1.3.0
> Environment: running locally on MAC OS X and remotely on Centos 7
> Reporter: john schneider
> Attachments: casetest-1.json, casetest-2.json
>
>
> I'm trying to use case statements to manage a heterogeneous stream of json
> objects as
> shown in the example from
> https://drill.apache.org/blog/2015/11/23/drill-1.3-released/
> trying to get this to work I have encounted a number of failure modes.
> For this report there are two files casetest-1.json and casetest-2.json
> casetest-1.json has the following two lines - there are two schemas
> represented by
> the two lines
> {"level":"EVENT","time":1448844983160,"user_info":{"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":"[email protected]"}}
> {"level":"EVENT","time":1448844983160,"user_info":{"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":{"id":"[email protected]","roles":null,"isNotadmins":true,"iscoders":true}}}
> casetest-2.json has the following two lines - there is just one schema
> represented
> {"level":"EVENT","time":1448844983160,"user_info":{"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":{"id":"[email protected]","roles":null,"isNotadmins":true,"iscoders":true}}}
> {"level":"EVENT","time":1448844983160,"user_info":{"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":{"id":"[email protected]","roles":null,"isNotadmins":true,"iscoders":true}}}
> I'll outline all of the things I've tried and include stacktraces where
> appropriate
> Prior to running tests, I "enable_union_type"
> 0: jdbc:drill:zk=local> ALTER SESSION SET `exec.enable_union_type` = true;
> +-------+----------------------------------+
> | ok | summary |
> +-------+----------------------------------+
> | true | exec.enable_union_type updated. |
> +-------+----------------------------------+
> 1 row selected (1.344 seconds)
> ## FIRST TEST, two lines two schemas, one with a field that's a string and
> second field is a map
> ## first lets just select all records, I expect this to barf since there are
> two schemas
> ## WORKS AS EXPECTED for this version of software
> : jdbc:drill:zk=local> select * from
> dfs.`/Users/jos/work/drill/casetest-1.json` t ;
> Error: DATA_READ ERROR: Error parsing JSON - You tried to start when you are
> using a ValueWriter of type NullableVarCharWriterImpl.
> File /Users/jos/work/drill/casetest-1.json
> Record 2
> Fragment 0:0
> [Error Id: 1385aea5-68cb-4775-ae17-fad6b4901ea6 on 10.0.1.9:31010]
> (state=,code=0)
> ## SECOND TEST, now lets use a case statement to sort out the schemas, I don't
> ## expect this to barf but barf it does and hard w/ a NULLPOINTER, THIS
> SHOULD HAVE WORKED
> ## StackTrace at bottom
> 0: jdbc:drill:zk=local> select case when is_map(t.user_info.`user`) then
> 'map' else 'string' end from dfs.`/Users/jos/work/drill/casetest-1.json` t ;
> Error: SYSTEM ERROR: NullPointerException
> Fragment 0:0
> [Error Id: 2568df13-d11a-402d-9cc9-82bd0ddb3c50 on 10.19.220.63:31010]
> (state=,code=0)
> 0: jdbc:drill:zk=local>
> ## THRID TEST now lets see if any case will work on any structure - for this
> we
> ## will use casetest-2.json which has just one schema
> ## select * WORKS AS EXPECTED
> 0: jdbc:drill:zk=local> select * from
> dfs.`/Users/jos/work/drill/casetest-2.json` t ;
> +-------+------+-----------+
> | level | time | user_info |
> +-------+------+-----------+
> | EVENT | 1448844983160 |
> {"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":{"id":"[email protected]","isNotadmins":true,"iscoders":true}}
> |
> | EVENT | 1448844983160 |
> {"session":"9OOLJ8HEGEQ0sTCVSXsK9ddJWVpFM5wM","user":{"id":"[email protected]","isNotadmins":true,"iscoders":true}}
> |
> +-------+------+-----------+
> 2 rows selected (1.701 seconds)
> ## FOURTH TEST - now lets try to use a case statement w/ same schema
> ## THIS SHOULD HAVE WORKED, it doesn't work, and we get different more
> puzzling errors
> 0: jdbc:drill:zk=local> select case when is_map(t.user_info.`user`) then
> 'map' else 'string' end from dfs.`/Users/jos/work/drill/casetest-2.json` t ;
> Error: SYSTEM ERROR: SchemaChangeException: Failure while trying to
> materialize incoming schema. Errors:
> Error in expression at index -1. Error: Missing function implementation:
> [is_map(MAP-REQUIRED)]. Full expression: --UNKNOWN EXPRESSION--.
> Error in expression at index -1. Error: Failure composing If Expression.
> All conditions must return a boolean type. Condition was of Type NULL..
> Full expression: --UNKNOWN EXPRESSION--..
> Fragment 0:0
> [Error Id: c3a7f989-4d93-48c0-9a16-a38dd195314c on 10.19.220.63:31010]
> (state=,code=0)
> 0: jdbc:drill:zk=local>
> ================ Stack trace from TEST 2 ===========================
> Error: SYSTEM ERROR: NullPointerException
> Fragment 0:0
> [Error Id: 9daa2496-d774-47b6-b786-014aac9abe59 on 10.19.220.63:31010]
> (state=,code=0)
> [Error Id: 9daa2496-d774-47b6-b786-014aac9abe59 on 10.19.220.63:31010]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:534)
> ~[drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:321)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:184)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:290)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
> [drill-common-1.3.0.jar:1.3.0]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_51]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_51]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_51]
> Caused by: java.lang.NullPointerException: null
> at
> org.apache.drill.exec.vector.complex.UnionVector.getFieldIdIfMatches(UnionVector.java:729)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.vector.complex.FieldIdUtil.getFieldIdIfMatches(FieldIdUtil.java:95)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.vector.complex.AbstractContainerVector.getFieldIdIfMatches(AbstractContainerVector.java:114)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.record.SimpleVectorWrapper.getFieldIdIfMatches(SimpleVectorWrapper.java:146)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.record.VectorContainer.getValueVectorId(VectorContainer.java:252)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.ScanBatch.getValueVectorId(ScanBatch.java:307)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitSchemaPath(ExpressionTreeMaterializer.java:628)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitSchemaPath(ExpressionTreeMaterializer.java:217)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.expression.SchemaPath.accept(SchemaPath.java:152)
> ~[drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitFunctionCall(ExpressionTreeMaterializer.java:274)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitFunctionCall(ExpressionTreeMaterializer.java:217)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.expression.FunctionCall.accept(FunctionCall.java:60)
> ~[drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitIfExpression(ExpressionTreeMaterializer.java:494)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer$MaterializeVisitor.visitIfExpression(ExpressionTreeMaterializer.java:217)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.expression.IfExpression.accept(IfExpression.java:64)
> ~[drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.expr.ExpressionTreeMaterializer.materialize(ExpressionTreeMaterializer.java:120)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.setupNewSchema(ProjectRecordBatch.java:386)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:78)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:131)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:156)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:104)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:80)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:94)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:256)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:250)
> ~[drill-java-exec-1.3.0.jar:1.3.0]
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.8.0_51]
> at javax.security.auth.Subject.doAs(Subject.java:422) ~[na:1.8.0_51]
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> ~[hadoop-common-2.7.1.jar:na]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:250)
> [drill-java-exec-1.3.0.jar:1.3.0]
> ... 4 common frames omitted
> 2015-12-01 10:36:15,231 [CONTROL-rpc-event-queue] WARN
> o.a.drill.exec.work.foreman.Foreman - Dropping request to move to COMPLETED
> state as query is already at FAILED state (which is terminal).
> 2015-12-01 10:36:15,232 [CONTROL-rpc-event-queue] WARN
> o.a.d.e.w.b.ControlMessageHandler - Dropping request to cancel fragment.
> 29a2175f-d3f2-caf9-2b51-12754264abe9:0:0 does not exist.
> 2015-12-01 10:36:15,234 [USER-rpc-event-queue] INFO
> o.a.d.j.i.DrillResultSetImpl$ResultsListener - [#7] Query failed:
> org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR:
> NullPointerException
> Fragment 0:0
> [Error Id: 9daa2496-d774-47b6-b786-014aac9abe59 on 10.19.220.63:31010]
> at
> org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:118)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.user.UserClient.handleReponse(UserClient.java:112)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.BasicClientWithConnection.handle(BasicClientWithConnection.java:47)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.BasicClientWithConnection.handle(BasicClientWithConnection.java:32)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at org.apache.drill.exec.rpc.RpcBus.handle(RpcBus.java:69)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at org.apache.drill.exec.rpc.RpcBus$RequestEvent.run(RpcBus.java:400)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.SerializedExecutor$RunnableProcessor.run(SerializedExecutor.java:105)
> [drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.RpcBus$SameExecutor.execute(RpcBus.java:264)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.common.SerializedExecutor.execute(SerializedExecutor.java:142)
> [drill-common-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:298)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:269)
> [drill-java-exec-1.3.0.jar:1.3.0]
> at
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:254)
> [netty-handler-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
> [netty-common-4.0.27.Final.jar:4.0.27.Final]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_51]
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