[YARN-2952] Incorrect version check in RMStateStore

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Labels: 2.6.1-candidate
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Rohith Sharma K S
• Reporter: Jian He
• Created: 12/Dec/14 01:57
• Updated: 30/Aug/16 01:29
• Resolved: 20/Dec/14 00:57

Description

In RMStateStore#checkVersion: if we modify tCURRENT_VERSION_INFO to 2.0, it'll still store the version as 1.0 which is incorrect; The same thing might happen to NM store, timeline store.

    // if there is no version info, treat it as 1.0;
    if (loadedVersion == null) {
      loadedVersion = Version.newInstance(1, 0);
    }
    if (loadedVersion.isCompatibleTo(getCurrentVersion())) {
      LOG.info("Storing RM state version info " + getCurrentVersion());
      storeVersion();