Package org.apache.hadoop.hbase.regionserver

Interface MetricsRegionWrapper

All Known Implementing Classes:
MetricsRegionWrapperImpl
@Private public interface MetricsRegionWrapper
Interface of class that will wrap an HRegion and export numbers so they can be used in MetricsRegionSource

  • Method Details

    • getTableName

      String getTableName()
      Get the name of the table the region belongs to.
      Returns:
      The string version of the table name.

    • getNamespace

      String getNamespace()
      Get the name of the namespace this table is in.
      Returns:
      String version of the namespace. Can't be empty.

    • getRegionName

      String getRegionName()
      Get the name of the region.
      Returns:
      The encoded name of the region.

    • getNumStores

      long getNumStores()
      Get the number of stores hosted on this region server.

    • getNumStoreFiles

      long getNumStoreFiles()
      Get the number of store files hosted on this region server.

    • getMemStoreSize

      long getMemStoreSize()
      Get the size of the memstore on this region server.

    • getStoreFileSize

      long getStoreFileSize()
      Get the total size of the store files this region server is serving from.

    • getCurrentRegionCacheRatio

      float getCurrentRegionCacheRatio()
      Gets the current cache % ratio for this region.

    • getReadRequestCount

      long getReadRequestCount()
      Get the total number of read requests that have been issued against this region

    • getCpRequestCount

      long getCpRequestCount()
      Get the total number of CoprocessorService requests that have been issued against this region

    • getFilteredReadRequestCount

      long getFilteredReadRequestCount()
      Get the total number of filtered read requests that have been issued against this region

    • getMaxStoreFileAge

      long getMaxStoreFileAge()
      Returns Max age of store files under this region

    • getMinStoreFileAge

      long getMinStoreFileAge()
      Returns Min age of store files under this region

    • getAvgStoreFileAge

      long getAvgStoreFileAge()
      Returns Average age of store files under this region

    • getNumReferenceFiles

      long getNumReferenceFiles()
      Returns Number of reference files under this region

    • getWriteRequestCount

      long getWriteRequestCount()
      Get the total number of mutations that have been issued against this region.

    • getTotalRequestCount

      long getTotalRequestCount()

    • getNumFilesCompacted

      long getNumFilesCompacted()

    • getNumBytesCompacted

      long getNumBytesCompacted()

    • getNumCompactionsCompleted

      long getNumCompactionsCompleted()

    • getLastMajorCompactionAge

      long getLastMajorCompactionAge()
      Returns Age of the last major compaction

    • getNumCompactionsFailed

      long getNumCompactionsFailed()
      Returns the total number of compactions that have been reported as failed on this region. Note that a given compaction can be reported as both completed and failed if an exception is thrown in the processing after HRegion.compact().

    • getNumCompactionsQueued

      long getNumCompactionsQueued()
      Returns the total number of compactions that are currently queued(or being executed) at point in time

    • getNumFlushesQueued

      long getNumFlushesQueued()
      Returns the total number of flushes currently queued(being executed) for this region at point in time

    • getMaxCompactionQueueSize

      long getMaxCompactionQueueSize()
      Note that this metric is updated periodically and hence might miss some data points.
      Returns:
      the max number of compactions queued for this region

    • getMaxFlushQueueSize

      long getMaxFlushQueueSize()
      Note that this metric is updated periodically and hence might miss some data points.
      Returns:
      the max number of flushes queued for this region

    • getRegionHashCode

      int getRegionHashCode()

    • getReplicaId

      int getReplicaId()
      Get the replica id of this region.

    • getStoreRefCount

      long getStoreRefCount()
      Returns the number of references active on the store

    • getMaxCompactedStoreFileRefCount

      long getMaxCompactedStoreFileRefCount()
      Returns the max number of references active on any store file among all compacted store files that belong to this region

    • getMemstoreOnlyRowReadsCount

      Map<String,Long> getMemstoreOnlyRowReadsCount()
      Returns the number of row reads completely on memstore per store

    • getMixedRowReadsCount

      Map<String,Long> getMixedRowReadsCount()
      Returns the number of row reads on memstore and file per store