[jira] [Created] (HBASE-5024) A thread named LruBlockCache.EvictionThread remains after the shutdown of a cluster

["nkeywal (Created) (JIRA)" <ji...@apache.org>]

A thread named LruBlockCache.EvictionThread remains after the shutdown of a cluster
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                 Key: HBASE-5024
                 URL: https://issues.apache.org/jira/browse/HBASE-5024
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.0
            Reporter: nkeywal
            Priority: Minor


There is no cleanup function in hbase.io.hfile.CacheConfig. The cache is a singleton, shared by all cluster if we launch more than one cluster on a test.

Related code is:

{noformat}
  /**
   * Static reference to the block cache, or null if no caching should be used
   * at all.
   */
  private static BlockCache globalBlockCache;

  /** Boolean whether we have disabled the block cache entirely. */
  private static boolean blockCacheDisabled = false;

  /**
   * Returns the block cache or <code>null</code> in case none should be used.
   *
   * @param conf  The current configuration.
   * @return The block cache or <code>null</code>.
   */
  private static synchronized BlockCache instantiateBlockCache(){
     // initiate globalBlockCache
{noformat}




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