LEAD(<varchar-column>) returns IOB Exception

0: jdbc:drill:schema=dfs.tmp> select lead(col3) over (partition by col2 order by col0) lead_col0 from `fewRowsAllData.parquet`;
java.lang.RuntimeException: java.sql.SQLException: SYSTEM ERROR: IndexOutOfBoundsException: index: 31668, length: 2444 (expected: range(0, 32768))

Fragment 0:0

[Error Id: a52df546-f567-4e07-aa68-96a149e413da on centos-04.qa.lab:31010]
	at sqlline.IncrementalRows.hasNext(IncrementalRows.java:73)
	at sqlline.TableOutputFormat$ResizingRowsProvider.next(TableOutputFormat.java:87)
	at sqlline.TableOutputFormat.print(TableOutputFormat.java:118)
	at sqlline.SqlLine.print(SqlLine.java:1583)
	at sqlline.Commands.execute(Commands.java:852)
	at sqlline.Commands.sql(Commands.java:751)
	at sqlline.SqlLine.dispatch(SqlLine.java:738)
	at sqlline.SqlLine.begin(SqlLine.java:612)
	at sqlline.SqlLine.start(SqlLine.java:366)
	at sqlline.SqlLine.main(SqlLine.java:259)

2015-08-04 21:56:32,515 [Client-1] INFO  o.a.d.j.i.DrillResultSetImpl$ResultsListener - [#24] Query failed:
org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR: IndexOutOfBoundsException: index: 31668, length: 2444 (expected: range(0, 32768))

Fragment 0:0

[Error Id: 94e70408-66b6-426d-8f57-8a782ba974c0 on centos-04.qa.lab:31010]
        at org.apache.drill.exec.rpc.user.QueryResultHandler.resultArrived(QueryResultHandler.java:118) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.user.UserClient.handleReponse(UserClient.java:111) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.BasicClientWithConnection.handle(BasicClientWithConnection.java:47) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.BasicClientWithConnection.handle(BasicClientWithConnection.java:32) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.RpcBus.handle(RpcBus.java:61) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:233) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        at org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:205) [drill-java-exec-1.2.0-SNAPSHOT.jar:1.2.0-SNAPSHOT]
        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.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:618) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
        at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:329) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:250) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
        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:744) [na:1.7.0_45]