[AMBARI-17306] Filter out MOTD logging from 'llapstatus' command in order to get the output which is JSON parsable.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: ambari-server
• Assignee: Swapan Shridhar
• Reporter: Swapan Shridhar
• Due: 18/Jun/16
• Created: 18/Jun/16 01:11
• Updated: 20/Oct/16 17:17
• Resolved: 22/Jun/16 22:33

Description

Example of expected response which can be JSON parsed:

CASE A:

{
  "amInfo" : {
    "appName" : "llap0",
    "appType" : "org-apache-slider",
    "appId" : "application_1466036628595_0010",
    "containerId" : "container_1466036628595_0010_01_000001",
    "hostname" : "hostname",
    "amWebUrl" : "http://hostname:60865/"
  },
  "state" : "LAUNCHING",
  "originalConfigurationPath" : "hdfs://hostname:8020/user/hive/.slider/cluster/llap0/snapshot",
  "generatedConfigurationPath" : "hdfs://hostname:8020/user/hive/.slider/cluster/llap0/generated",
  "desiredInstances" : 1,
  "liveInstances" : 0,
  "appStartTime" : 1466123287309
}

The same output with MOTD message:

This is MOTD message
This is MOTD message1
{
  "amInfo" : {
    "appName" : "llap0",
    "appType" : "org-apache-slider",
    "appId" : "application_1466036628595_0010",
    "containerId" : "container_1466036628595_0010_01_000001",
    "hostname" : "hostname",
    "amWebUrl" : "http://hostname:60865/"
  },
  "state" : "LAUNCHING",
  "originalConfigurationPath" : "hdfs://hostname:8020/user/hive/.slider/cluster/llap0/snapshot",
  "generatedConfigurationPath" : "hdfs://hostname:8020/user/hive/.slider/cluster/llap0/generated",
  "desiredInstances" : 1,
  "liveInstances" : 0,
  "appStartTime" : 1466123287309
}

Other scenario can be (eg: APP_NOTFOUND):

CASE B:

This is MOTD message
This is MOTD message1
{
  "state" : "APP_NOT_FOUND"
}

• We need to filter out extra lines initially added on top of JSON parseable string.

Issue Links

• is duplicated by: AMBARI-17327 Default value missing for "Memory Per Daemon" config parameter in install wizard[Hive>Advanced-hive-interactive-site group]
• links to: Reviewboard Link