[YARN-3025] Provide API for retrieving blacklisted nodes

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Later
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 09/Jan/15 16:59
• Updated: 02/Aug/15 02:46
• Resolved: 02/Aug/15 02:46

Description

We have the following method which updates blacklist:

  public synchronized void updateBlacklist(List<String> blacklistAdditions,
      List<String> blacklistRemovals) {

Upon AM failover, there should be an API which returns the blacklisted nodes so that the new AM can make consistent decisions.
The new API can be:

  public synchronized List<String> getBlacklistedNodes()

Issue Links

• relates to: YARN-3248 Display count of nodes blacklisted by apps in the web UI