[HBASE-7964] requestCompaction priority argument is not used (except for user compaction check)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Compaction
• Assignee: Sergey Shelukhin
• Reporter: Sergey Shelukhin
• Created: 28/Feb/13 23:52
• Updated: 16/Jun/22 05:45
• Resolved: 06/Mar/13 01:02

Description

In some places, like major compaction chore or requesting interface for coproc, we pass priority value to requestCompaction.
Checking the code in trunk and old code in 94, I see that neither uses this value properly; first, they check it for being user-level. Then they do this:

        // everything went better than expected. create a compaction request
        int pri = getCompactPriority(priority);
        ret = new CompactionRequest(region, this, filesToCompact, isMajor, pri);

getPriority does:

    // If this is a user-requested compaction, leave this at the highest priority
    if(priority == PRIORITY_USER) {
      return PRIORITY_USER;
    } else {
      return this.blockingStoreFileCount - this.storefiles.size();
    }

, so non-user caller value is just thrown away. Probably if it's not NO_PRIORITY, it needs to be used. Overall priority code needs cleanup.

Issue Links

• blocks: HBASE-7680 implement compaction policy for stripe compactions