[
https://issues.apache.org/jira/browse/DRILL-5399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949468#comment-15949468
]
Rahul Challapalli commented on DRILL-5399:
------------------------------------------
I hit this random error on drill 1.9.0 as well with the below query
{code}
select sub.rownum, flatten(sub.kvgen_output) from (select rownum,
kvgen(flatten(complex)) kvgen_output from `json_kvgenflatten/kvgen1.json`) sub
{code}
Dataset for the above query
{code}
{
"rownum": 1,
"bigintegercol": {
"int_1": 1,
"int_2": 2,
"int_3": 3
},
"varcharcol": {
"varchar_1": "abc",
"varchar_2": "def",
"varchar_3": "xyz"
},
"boolcol": {
"boolean_1": true,
"boolean_2": false,
"boolean_3": true
},
"float8col": {
"f8_1": 1.1,
"f8_2": 2.2
},
"complex": [
{
"col1": 3
},
{
"col2": 2,
"col3": 1
},
{
"col1": 7
}
]
}
{
"rownum": 2,
"bigintegercol": {
"int_1": 1,
"int_2": 2
},
"varcharcol": {
"varchar_1": "abcd"
},
"boolcol": {
"boolean_1": true
},
"float8col": {
"f8_1": 1.1,
"f8_2": 2.2,
"f8_3": 3.3
},
"complex": [
{
"col2": 2,
"col3": 1
},
{
"col1": 7
}
]
}
{
"rownum": 3,
"bigintegercol": {
"int_1": 1,
"int_3": 3
},
"varcharcol": {
"varchar_1": "abcde",
"varchar_2": null,
"varchar_3": "xyz",
"varchar_4": "xyz2"
},
"boolcol": {
"boolean_1": true,
"boolean_2": false
},
"float8col": {
"f8_1": 1.1,
"f8_3": 6.6
},
"complex": [
{
"col1": 2,
"col3": 1
}
]
}
{
"rownum": 4,
"bigintegercol": {
"int_2": 2,
"int_3": 3
},
"varcharcol": {
"varchar_1": "abc",
"varchar_2": "def"
},
"boolcol": {
"boolean_1": true,
"boolean_2": false,
"boolean_3": null
},
"float8col": {
"f8_1": 1.1,
"f8_2": 2.2
},
"complex": [
{
"col1": 3,
"col2": 2
},
{
"col3": 1,
"col1": 7
}
]
}
{code}
> Random Error : Flatten does not support inputs of non-list values.
> ------------------------------------------------------------------
>
> Key: DRILL-5399
> URL: https://issues.apache.org/jira/browse/DRILL-5399
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Data Types, Storage - JSON
> Affects Versions: 1.10.0
> Reporter: Rahul Challapalli
>
> git.commit.id.abbrev=38ef562
> The below query did not fail when I ran it in isolation. However when I ran
> the test suite at [1], which also contains the below query, by using 50
> threads submitting queries concurrently, I hit the below error.
> {code}
> select flatten(sub.fk.`value`) from (select flatten(kvgen(map)) fk from
> `json_kvgenflatten/nested3.json`) sub
> Failed with exception
> java.sql.SQLException: UNSUPPORTED_OPERATION ERROR: Flatten does not support
> inputs of non-list values.
> Fragment 0:0
> [Error Id: 90026283-0b95-4bda-948e-54ed57a62edf on qa-node183.qa.lab:31010]
> at
> org.apache.drill.jdbc.impl.DrillCursor.nextRowInternally(DrillCursor.java:489)
> at
> org.apache.drill.jdbc.impl.DrillCursor.loadInitialSchema(DrillCursor.java:561)
> at
> org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:1895)
> at
> org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:61)
> at
> oadd.org.apache.calcite.avatica.AvaticaConnection$1.execute(AvaticaConnection.java:473)
> at
> org.apache.drill.jdbc.impl.DrillMetaImpl.prepareAndExecute(DrillMetaImpl.java:1100)
> at
> oadd.org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:477)
> at
> org.apache.drill.jdbc.impl.DrillConnectionImpl.prepareAndExecuteInternal(DrillConnectionImpl.java:180)
> at
> oadd.org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:109)
> at
> oadd.org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:130)
> at
> org.apache.drill.jdbc.impl.DrillStatementImpl.executeQuery(DrillStatementImpl.java:112)
> at
> org.apache.drill.test.framework.DrillTestJdbc.executeQuery(DrillTestJdbc.java:177)
> at
> org.apache.drill.test.framework.DrillTestJdbc.run(DrillTestJdbc.java:101)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: oadd.org.apache.drill.common.exceptions.UserRemoteException:
> UNSUPPORTED_OPERATION ERROR: Flatten does not support inputs of non-list
> values.
> Fragment 0:0
> [Error Id: 90026283-0b95-4bda-948e-54ed57a62edf on qa-node183.qa.lab:31010]
> at
> oadd.org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:123)
> at
> oadd.org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:343)
> at
> oadd.org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:88)
> at
> oadd.org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:274)
> at
> oadd.org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:244)
> at
> oadd.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> at
> oadd.io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:254)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> at
> oadd.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> at
> oadd.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> at
> oadd.io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> at
> oadd.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> at
> oadd.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
> at
> oadd.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
> at oadd.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
> at
> oadd.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
> ... 1 more
> {code}
> [1]
> https://github.com/mapr/drill-test-framework/tree/master/framework/resources/Functional/json/json_kvgenflatten
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