[YARN-3347] Improve YARN log command to get AMContainer logs as well as running containers logs

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: log-aggregation
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Xuan Gong
• Reporter: Xuan Gong
• Created: 13/Mar/15 01:59
• Updated: 30/Aug/16 01:26
• Resolved: 14/Apr/15 00:24

Description

Right now, we could specify applicationId, node http address and container ID to get the specify container log. Or we could only specify applicationId to get all the container logs. It is very hard for the users to get logs for AM container since the AMContainer logs have more useful information. Users need to know the AMContainer's container ID and related Node http address.

We could improve the YARN Log Command to allow users to get AMContainer logs directly

Issue Links

• relates to: YARN-1626 Enhance yarn logs CLI to allow logs to be pulled for a given containerId without specifying nodeAddress
• relates to: YARN-1627 Enhance yarn logs command to specify the filename to be retrieved
• relates to: YARN-4369 Fetch AMContainer logs failed in CLI when RM ha