Field Detail

• MEMSTORE_SIZE_KEY

  public static final String MEMSTORE_SIZE_KEY

  See Also:

  Constant Field Values

• MEMSTORE_SIZE_OLD_KEY

  public static final String MEMSTORE_SIZE_OLD_KEY

  See Also:

  Constant Field Values

• MEMSTORE_SIZE_LOWER_LIMIT_KEY

  public static final String MEMSTORE_SIZE_LOWER_LIMIT_KEY

  See Also:

  Constant Field Values

• MEMSTORE_SIZE_LOWER_LIMIT_OLD_KEY

  public static final String MEMSTORE_SIZE_LOWER_LIMIT_OLD_KEY

  See Also:

  Constant Field Values

• DEFAULT_MEMSTORE_SIZE

  public static final float DEFAULT_MEMSTORE_SIZE

  See Also:

  Constant Field Values

• DEFAULT_MEMSTORE_SIZE_LOWER_LIMIT

  public static final float DEFAULT_MEMSTORE_SIZE_LOWER_LIMIT

  See Also:

  Constant Field Values

Constructor Detail

• HeapMemorySizeUtil

  public HeapMemorySizeUtil()

Method Detail

• checkForClusterFreeMemoryLimit

  public static void checkForClusterFreeMemoryLimit(org.apache.hadoop.conf.Configuration conf)

  Checks whether we have enough heap memory left out after portion for Memstore and Block cache. We need atleast 20% of heap left out for other RS functions.

  Parameters:

  conf -

• getGlobalMemStorePercent

  public static float getGlobalMemStorePercent(org.apache.hadoop.conf.Configuration c,
                               boolean logInvalid)

  Retrieve global memstore configured size as percentage of total heap.

  Parameters:

  c -

  logInvalid -

• getGlobalMemStoreLowerMark

  public static float getGlobalMemStoreLowerMark(org.apache.hadoop.conf.Configuration c,
                                 float globalMemStorePercent)

  Retrieve configured size for global memstore lower water mark as percentage of total heap.

  Parameters:

  c -

  globalMemStorePercent -

• getBlockCacheHeapPercent

  public static float getBlockCacheHeapPercent(org.apache.hadoop.conf.Configuration conf)

  Retrieve configured size for on heap block cache as percentage of total heap.

  Parameters:

  conf -

• getL2BlockCacheHeapPercent

  public static float getL2BlockCacheHeapPercent(org.apache.hadoop.conf.Configuration conf)

  Parameters:

  conf -

  Returns:

  The on heap size for L2 block cache.