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

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Cannot Reproduce
• Affects Version/s: 0.94.0
• Assignee: Unassigned
• Reporter: Nicolas Liochon
• Created: 14/Dec/11 11:32
• Updated: 12/Jun/22 19:53
• Resolved: 16/Nov/16 21:08

Description

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:

  /**
   * 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

Issue Links

• relates to: HBASE-4602 Make the suite run in at least half the time