[HADOOP-1634] EC2 launch-hadoop-cluster awk Problem

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.14.0
• Component/s: contrib/cloud

Environment

ec2-api-tools-1.2-11797

• Assignee: Unassigned
• Reporter: Stu Hood
• Created: 18/Jul/07 20:53
• Updated: 17/Aug/07 17:34
• Resolved: 22/Jul/07 20:26

Description

With Amazon 'ec2-api-tools-1.2-11797' and Hadoop 0.13.0 the output from ec2-describe-instances is being incorrectly AWK'd on the last few lines of the launch-hadoop-cluster script.

Specifically, on the
"""
MASTER_EC2_HOST=`ec2-describe-instances | grep INSTANCE | grep running | awk '

{if ($7 == 0) print $4}

'`
"""
line, it should be comparing column $8 rather than column $7.

When this command fails, the hostname of the master doesn't get set correctly and the IP lookup finds incorrect results. The last lines of output from the script look something like this:
"""
Appointing master
Master is . Please set up DNS so blah.gotdns.org points to D.ROOT-SERVERS.NET.
I.ROOT-SERVERS.NET.
F.ROOT-SERVERS.NET.
M.ROOT-SERVERS.NET.
J.ROOT-SERVERS.NET.
C.ROOT-SERVERS.NET.
H.ROOT-SERVERS.NET.
E.ROOT-SERVERS.NET.
A.ROOT-SERVERS.NET.
K.ROOT-SERVERS.NET.
G.ROOT-SERVERS.NET.
B.ROOT-SERVERS.NET.
L.ROOT-SERVERS.NET..
Press return to continue.
"""