Package org.apache.hadoop.hbase

Interface RegionMetrics

All Known Implementing Classes:
RegionLoad, RegionMetricsBuilder.RegionMetricsImpl
@Public public interface RegionMetrics
Encapsulates per-region load metrics.

  • Method Details

    • getRegionName

      byte[] getRegionName()
      Returns the region name

    • getStoreCount

      int getStoreCount()
      Returns the number of stores

    • getStoreFileCount

      int getStoreFileCount()
      Returns the number of storefiles

    • getStoreFileSize

      Size getStoreFileSize()
      Returns the total size of the storefiles

    • getMemStoreSize

      Size getMemStoreSize()
      Returns the memstore size

    • getReadRequestCount

      long getReadRequestCount()
      Returns the number of read requests made to region

    • getWriteRequestCount

      long getWriteRequestCount()
      Returns the number of write requests made to region

    • getRequestCount

      default long getRequestCount()
      Returns the number of write requests and read requests made to region

    • getNameAsString

      default String getNameAsString()
      Returns the region name as a string

    • getFilteredReadRequestCount

      long getFilteredReadRequestCount()
      Returns the number of filtered read requests made to region

    • getStoreFileIndexSize

      Size getStoreFileIndexSize()
      TODO: why we pass the same value to different counters? Currently, the value from getStoreFileIndexSize() is same with getStoreFileRootLevelIndexSize() see HRegionServer#createRegionLoad.
      Returns:
      The current total size of root-level indexes for the region

    • getStoreFileRootLevelIndexSize

      Size getStoreFileRootLevelIndexSize()
      Returns The current total size of root-level indexes for the region

    • getStoreFileUncompressedDataIndexSize

      Size getStoreFileUncompressedDataIndexSize()
      Returns The total size of all index blocks, not just the root level

    • getBloomFilterSize

      Size getBloomFilterSize()
      Returns The total size of all Bloom filter blocks, not just loaded into the block cache

    • getCompactingCellCount

      long getCompactingCellCount()
      Returns the total number of cells in current compaction

    • getCompactedCellCount

      long getCompactedCellCount()
      Returns the number of already compacted kvs in current compaction

    • getCompletedSequenceId

      long getCompletedSequenceId()
      This does not really belong inside RegionLoad but its being done in the name of expediency.
      Returns:
      the completed sequence Id for the region

    • getStoreSequenceId

      Map<byte[],Long> getStoreSequenceId()
      Returns completed sequence id per store.

    • getUncompressedStoreFileSize

      Size getUncompressedStoreFileSize()
      Returns the uncompressed size of the storefiles

    • getDataLocality

      float getDataLocality()
      Returns the data locality of region in the regionserver.

    • getLastMajorCompactionTimestamp

      long getLastMajorCompactionTimestamp()
      Returns the timestamp of the oldest hfile for any store of this region.

    • getStoreRefCount

      int getStoreRefCount()
      Returns the reference count for the stores of this region

    • getMaxCompactedStoreFileRefCount

      int getMaxCompactedStoreFileRefCount()
      Returns the max reference count for any store file among all compacted stores files of this region

    • getDataLocalityForSsd

      float getDataLocalityForSsd()
      Different from dataLocality,this metric's numerator only include the data stored on ssd
      Returns:
      the data locality for ssd of region in the regionserver

    • getBlocksLocalWeight

      long getBlocksLocalWeight()
      Returns the data at local weight of this region in the regionserver

    • getBlocksLocalWithSsdWeight

      long getBlocksLocalWithSsdWeight()
      Different from blocksLocalWeight,this metric's numerator only include the data stored on ssd
      Returns:
      the data at local with ssd weight of this region in the regionserver

    • getBlocksTotalWeight

      long getBlocksTotalWeight()
      Returns the block total weight of this region

    • getCompactionState

      CompactionState getCompactionState()
      Returns the compaction state of this region

    • getRegionSizeMB

      Size getRegionSizeMB()
      Returns the total size of the hfiles in the region

    • getCurrentRegionCachedRatio

      float getCurrentRegionCachedRatio()
      Returns current prefetch ratio of this region on this server