[PIG-4155] Quitting grunt shell using CTRL-D character throws exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.14.0
• Fix Version/s: 0.14.0
• Component/s: grunt

Environment

Hadoop 2.4.0.2.1.4.0-632
java version "1.7.0_55"
pig - trunk

• Hadoop Flags: Reviewed
• Assignee: Abhishek Agarwal
• Reporter: Abhishek Agarwal
• Created: 05/Sep/14 10:32
• Updated: 21/Nov/14 05:59
• Resolved: 08/Sep/14 05:04

Description

jline returns null when CTRL-D is given as input. This results in NPE in grunt because StringReader constructor throws NPE.

String line = super.readLine();
String paramSubLine = pc.doParamSubstitution(new BufferedReader(new StringReader(line)));
return paramSubLine;

java.lang.NullPointerException
        at java.io.StringReader.<init>(StringReader.java:33)
        at org.apache.pig.Main$ConsoleReaderWithParamSub.readLine(Main.java:1057)
        at jline.ConsoleReaderInputStream$ConsoleLineInputStream.read(ConsoleReaderInputStream.java:92)
        at java.io.InputStream.read(InputStream.java:154)
        at java.io.SequenceInputStream.read(SequenceInputStream.java:191)
        at java.io.SequenceInputStream.read(SequenceInputStream.java:194)
        at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:264)