[jira] [Created] (HBASE-17376) ClientAsyncPrefetchScanner fails due to too many rows

["ChiaPing Tsai (JIRA)" <ji...@apache.org>]

ChiaPing Tsai created HBASE-17376:
-------------------------------------

             Summary: ClientAsyncPrefetchScanner fails due to too many rows
                 Key: HBASE-17376
                 URL: https://issues.apache.org/jira/browse/HBASE-17376
             Project: HBase
          Issue Type: Bug
            Reporter: ChiaPing Tsai


ClientAsyncPrefetchScanner uses a fixed capacity LinkedBlockingQueue, so it may throw “queue full”. For example, scan with infinite caching or extra data from observer.
{noformat}
  @Override
  protected void initCache() {
    // concurrent cache
    cacheCapacity = calcCacheCapacity();
    cache = new LinkedBlockingQueue<Result>(cacheCapacity);
    cacheSizeInBytes = new AtomicLong(0);
    exceptionsQueue = new ConcurrentLinkedQueue<Exception>();
    prefetchRunnable = new PrefetchRunnable();
    prefetchRunning = new AtomicBoolean(false);
    closingThreadId = new AtomicLong(NO_THREAD);
  }
{noformat}



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