[ 
https://issues.apache.org/jira/browse/DRILL-6003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16277134#comment-16277134
 ] 

Abhishek Girish commented on DRILL-6003:
----------------------------------------

A different stack trace
{code}
Running 
org.apache.drill.TestDynamicUDFSupport#testLazyInitWhenDynamicUdfSupportIsDisabled
Nov 27, 2017 3:48:32 AM org.apache.calcite.sql.validate.SqlValidatorException 
<init>
SEVERE: org.apache.calcite.sql.validate.SqlValidatorException: No match found 
for function signature custom_lower(<CHARACTER>)
Nov 27, 2017 3:48:32 AM org.apache.calcite.runtime.CalciteException <init>
SEVERE: org.apache.calcite.runtime.CalciteContextException: From line 1, column 
8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)
Nov 27, 2017 3:48:33 AM org.apache.calcite.sql.validate.SqlValidatorException 
<init>
SEVERE: org.apache.calcite.sql.validate.SqlValidatorException: No match found 
for function signature custom_lower(<CHARACTER>)
Nov 27, 2017 3:48:33 AM org.apache.calcite.runtime.CalciteException <init>
SEVERE: org.apache.calcite.runtime.CalciteContextException: From line 1, column 
8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)
Running org.apache.drill.vector.TestToNullable
Running org.apache.drill.vector.TestToNullable#testNullable
03:48:33.057 [25e4046e-3de0-aab2-f524-74e5eb4473a3:foreman] ERROR 
o.a.d.e.e.f.FunctionImplementationRegistry - Problem during remote functions 
load from DrillUDF-1.0.jar
org.apache.drill.exec.exception.JarValidationException: Marker file 
drill-module.conf is missing in DrillUDF-1.0.jar
        at 
org.apache.drill.exec.expr.fn.FunctionImplementationRegistry.scan(FunctionImplementationRegistry.java:443)
 ~[classes/:na]
        at 
org.apache.drill.exec.expr.fn.FunctionImplementationRegistry.syncWithRemoteRegistry(FunctionImplementationRegistry.java:367)
 ~[classes/:na]
        at 
org.apache.drill.exec.planner.sql.DrillSqlWorker.getPlan(DrillSqlWorker.java:81)
 [classes/:na]
        at org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:1007) 
[classes/:na]
        at org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:279) 
[classes/:na]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
[na:1.7.0_131]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
[na:1.7.0_131]
        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_131]
Running org.apache.drill.vector.TestToNullable#testVariableWidth
Running org.apache.drill.vector.TestToNullable#testFixedWidth
Nov 27, 2017 3:48:33 AM org.apache.calcite.sql.validate.SqlValidatorException 
<init>
SEVERE: org.apache.calcite.sql.validate.SqlValidatorException: No match found 
for function signature custom_lower(<CHARACTER>)
Nov 27, 2017 3:48:33 AM org.apache.calcite.runtime.CalciteException <init>
SEVERE: org.apache.calcite.runtime.CalciteContextException: From line 1, column 
8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)
{code}
{code}
03:48:34.015 [main] ERROR org.apache.drill.TestReporter - Test Failed (d: 0 B(1 
B), h: 220.5 MiB(509.2 MiB), nh: -51.4 KiB(72.8 MiB)): 
testLazyInitWhenDynamicUdfSupportIsDisabled(org.apache.drill.TestDynamicUDFSupport)
org.apache.drill.exec.rpc.RpcException: 
org.apache.drill.common.exceptions.UserRemoteException: VALIDATION ERROR: From 
line 1, column 8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)

SQL Query null

[Error Id: 7aa44c96-6f6c-4112-88ce-d98d2021a535 on 10.10.104.57:31010]
        at 
org.apache.drill.exec.rpc.RpcException.mapException(RpcException.java:60) 
~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
        at 
org.apache.drill.exec.client.DrillClient$ListHoldingResultsListener.getResults(DrillClient.java:858)
 ~[classes/:na]
        at 
org.apache.drill.exec.client.DrillClient.runQuery(DrillClient.java:560) 
~[classes/:na]
        at 
org.apache.drill.test.BaseTestQuery.testRunAndReturn(BaseTestQuery.java:338) 
~[test-classes/:na]
        at 
org.apache.drill.test.BaseTestQuery$ClassicTestServices.testRunAndReturn(BaseTestQuery.java:276)
 ~[test-classes/:na]
        at 
org.apache.drill.test.DrillTestWrapper.testRunAndReturn(DrillTestWrapper.java:830)
 ~[test-classes/:na]
        at 
org.apache.drill.test.DrillTestWrapper.compareUnorderedResults(DrillTestWrapper.java:484)
 ~[test-classes/:na]
        at 
org.apache.drill.test.DrillTestWrapper.run(DrillTestWrapper.java:147) 
~[test-classes/:na]
        at org.apache.drill.test.TestBuilder.go(TestBuilder.java:139) 
~[test-classes/:na]
        at 
org.apache.drill.TestDynamicUDFSupport.testLazyInitWhenDynamicUdfSupportIsDisabled(TestDynamicUDFSupport.java:506)
 ~[test-classes/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
~[na:1.7.0_131]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_131]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_131]
org.apache.drill.common.exceptions.UserRemoteException: VALIDATION ERROR: From 
line 1, column 8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)

SQL Query null

[Error Id: 7aa44c96-6f6c-4112-88ce-d98d2021a535 on 10.10.104.57:31010]
        at 
org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:123)
 ~[classes/:na]
        at 
org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:468) 
~[classes/:na]
        at 
org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:102) 
~[classes/:na]
        at 
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:274) 
~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
        at 
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:244) 
~[drill-rpc-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
        at 
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
 ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
 ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
 ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
 ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
 ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) 
~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
 ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) 
~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) 
~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
        at 
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
 ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
        at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_131]
{code}
{code}
testLazyInitWhenDynamicUdfSupportIsDisabled(org.apache.drill.TestDynamicUDFSupport)
  Time elapsed: 1.137 sec  <<< ERROR!
org.apache.drill.exec.rpc.RpcException: 
org.apache.drill.common.exceptions.UserRemoteException: VALIDATION ERROR: From 
line 1, column 8 to line 1, column 24: No match found for function signature 
custom_lower(<CHARACTER>)

SQL Query null

[Error Id: 7aa44c96-6f6c-4112-88ce-d98d2021a535 on 10.10.104.57:31010]
        at 
org.apache.drill.exec.rpc.RpcException.mapException(RpcException.java:60)
        at 
org.apache.drill.exec.client.DrillClient$ListHoldingResultsListener.getResults(DrillClient.java:858)
        at 
org.apache.drill.exec.client.DrillClient.runQuery(DrillClient.java:560)
        at 
org.apache.drill.test.BaseTestQuery.testRunAndReturn(BaseTestQuery.java:338)
        at 
org.apache.drill.test.BaseTestQuery$ClassicTestServices.testRunAndReturn(BaseTestQuery.java:276)
        at 
org.apache.drill.test.DrillTestWrapper.testRunAndReturn(DrillTestWrapper.java:830)
        at 
org.apache.drill.test.DrillTestWrapper.compareUnorderedResults(DrillTestWrapper.java:484)
        at org.apache.drill.test.DrillTestWrapper.run(DrillTestWrapper.java:147)
        at org.apache.drill.test.TestBuilder.go(TestBuilder.java:139)
        at 
org.apache.drill.TestDynamicUDFSupport.testLazyInitWhenDynamicUdfSupportIsDisabled(TestDynamicUDFSupport.java:506)
Caused by: org.apache.drill.common.exceptions.UserRemoteException: VALIDATION 
ERROR: From line 1, column 8 to line 1, column 24: No match found for function 
signature custom_lower(<CHARACTER>)

SQL Query null

[Error Id: 7aa44c96-6f6c-4112-88ce-d98d2021a535 on 10.10.104.57:31010]
        at 
org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:123)
        at org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:468)
        at org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:102)
        at 
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:274)
        at 
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:244)
        at 
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
        at 
io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
        at 
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
        at 
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
        at 
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
        at 
io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
        at 
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
        at 
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
        at 
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
        at 
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
        at 
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
        at java.lang.Thread.run(Thread.java:745)
{code}

> Unit test TestDynamicUDFSupport.testLazyInitWhenDynamicUdfSupportIsDisabled 
> fails with FUNCTION ERROR: Failure reading Function class.
> --------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-6003
>                 URL: https://issues.apache.org/jira/browse/DRILL-6003
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Tools, Build & Test
>    Affects Versions: 1.12.0
>            Reporter: Abhishek Girish
>
> {code}
> 14:05:23.170 [main] ERROR org.apache.drill.TestReporter - Test Failed (d: 0 
> B(1 B), h: 229.7 MiB(1.1 GiB), nh: 187.0 KiB(73.2 MiB)): 
> testLazyInitWhenDynamicUdfSupportIsDisabled(org.apache.drill.TestDynamicUDFSupport)
> org.apache.drill.exec.rpc.RpcException: 
> org.apache.drill.common.exceptions.UserRemoteException: FUNCTION ERROR: 
> Failure reading Function class.
> Function Class com.drill.udf.CustomLowerFunction
> Fragment 0:0
> [Error Id: 1d6ea0e5-fd65-4622-924d-d196defaedc8 on 10.10.104.57:31010]
>       at 
> org.apache.drill.exec.rpc.RpcException.mapException(RpcException.java:60) 
> ~[drill-rpc-1.12.0.jar:1.12.0]
>       at 
> org.apache.drill.exec.client.DrillClient$ListHoldingResultsListener.getResults(DrillClient.java:865)
>  ~[classes/:na]
>       at 
> org.apache.drill.exec.client.DrillClient.runQuery(DrillClient.java:567) 
> ~[classes/:na]
>       at 
> org.apache.drill.test.BaseTestQuery.testRunAndReturn(BaseTestQuery.java:338) 
> ~[test-classes/:na]
>       at 
> org.apache.drill.test.BaseTestQuery$ClassicTestServices.testRunAndReturn(BaseTestQuery.java:276)
>  ~[test-classes/:na]
>       at 
> org.apache.drill.test.DrillTestWrapper.testRunAndReturn(DrillTestWrapper.java:830)
>  ~[test-classes/:na]
>       at 
> org.apache.drill.test.DrillTestWrapper.compareUnorderedResults(DrillTestWrapper.java:484)
>  ~[test-classes/:na]
>       at 
> org.apache.drill.test.DrillTestWrapper.run(DrillTestWrapper.java:147) 
> ~[test-classes/:na]
>       at org.apache.drill.test.TestBuilder.go(TestBuilder.java:139) 
> ~[test-classes/:na]
>       at 
> org.apache.drill.TestDynamicUDFSupport.testLazyInitWhenDynamicUdfSupportIsDisabled(TestDynamicUDFSupport.java:506)
>  ~[test-classes/:na]
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
> ~[na:1.7.0_131]
>       at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_131]
>       at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_131]
> org.apache.drill.common.exceptions.UserRemoteException: FUNCTION ERROR: 
> Failure reading Function class.
> Function Class com.drill.udf.CustomLowerFunction
> Fragment 0:0
> [Error Id: 1d6ea0e5-fd65-4622-924d-d196defaedc8 on 10.10.104.57:31010]
>       at 
> org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:123)
>  ~[classes/:na]
>       at 
> org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:468) 
> ~[classes/:na]
>       at 
> org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:102) 
> ~[classes/:na]
>       at 
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:274) 
> ~[drill-rpc-1.12.0.jar:1.12.0]
>       at 
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:244) 
> ~[drill-rpc-1.12.0.jar:1.12.0]
>       at 
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
>  ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
>  ~[netty-handler-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
>  ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
>  ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
>  ~[netty-codec-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) 
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
>  ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) 
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) 
> ~[netty-transport-4.0.48.Final.jar:4.0.48.Final]
>       at 
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
>  ~[netty-common-4.0.48.Final.jar:4.0.48.Final]
>       at java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_131]
> Tests run: 29, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 33.212 sec 
> <<< FAILURE! - in org.apache.drill.TestDynamicUDFSupport
> testLazyInitWhenDynamicUdfSupportIsDisabled(org.apache.drill.TestDynamicUDFSupport)
>   Time elapsed: 1.209 sec  <<< ERROR!
> org.apache.drill.exec.rpc.RpcException: 
> org.apache.drill.common.exceptions.UserRemoteException: FUNCTION ERROR: 
> Failure reading Function class.
> Function Class com.drill.udf.CustomLowerFunction
> Fragment 0:0
> [Error Id: 1d6ea0e5-fd65-4622-924d-d196defaedc8 on 10.10.104.57:31010]
>       at 
> org.apache.drill.exec.rpc.RpcException.mapException(RpcException.java:60)
>       at 
> org.apache.drill.exec.client.DrillClient$ListHoldingResultsListener.getResults(DrillClient.java:865)
>       at 
> org.apache.drill.exec.client.DrillClient.runQuery(DrillClient.java:567)
>       at 
> org.apache.drill.test.BaseTestQuery.testRunAndReturn(BaseTestQuery.java:338)
>       at 
> org.apache.drill.test.BaseTestQuery$ClassicTestServices.testRunAndReturn(BaseTestQuery.java:276)
>       at 
> org.apache.drill.test.DrillTestWrapper.testRunAndReturn(DrillTestWrapper.java:830)
>       at 
> org.apache.drill.test.DrillTestWrapper.compareUnorderedResults(DrillTestWrapper.java:484)
>       at org.apache.drill.test.DrillTestWrapper.run(DrillTestWrapper.java:147)
>       at org.apache.drill.test.TestBuilder.go(TestBuilder.java:139)
>       at 
> org.apache.drill.TestDynamicUDFSupport.testLazyInitWhenDynamicUdfSupportIsDisabled(TestDynamicUDFSupport.java:506)
> Caused by: org.apache.drill.common.exceptions.UserRemoteException: FUNCTION 
> ERROR: Failure reading Function class.
> Function Class com.drill.udf.CustomLowerFunction
> Fragment 0:0
> [Error Id: 1d6ea0e5-fd65-4622-924d-d196defaedc8 on 10.10.104.57:31010]
>       at 
> org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:123)
>       at org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:468)
>       at org.apache.drill.exec.rpc.user.UserClient.handle(UserClient.java:102)
>       at 
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:274)
>       at 
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:244)
>       at 
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>       at 
> io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>       at 
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>       at 
> io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:312)
>       at 
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:286)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>       at 
> io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:335)
>       at 
> io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1294)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:356)
>       at 
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:342)
>       at 
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:911)
>       at 
> io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
>       at 
> io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
>       at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
>       at 
> io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
>       at java.lang.Thread.run(Thread.java:745)
> {code}



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