001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hbase.regionserver;
020
021import org.apache.hadoop.hbase.metrics.BaseSource;
022import org.apache.hadoop.hbase.metrics.JvmPauseMonitorSource;
023import org.apache.yetus.audience.InterfaceAudience;
024
025/**
026 * Interface for classes that expose metrics about the regionserver.
027 */
028@InterfaceAudience.Private
029public interface MetricsRegionServerSource extends BaseSource, JvmPauseMonitorSource {
030
031  /**
032   * The name of the metrics
033   */
034  String METRICS_NAME = "Server";
035
036  /**
037   * The name of the metrics context that metrics will be under.
038   */
039  String METRICS_CONTEXT = "regionserver";
040
041  /**
042   * Description
043   */
044  String METRICS_DESCRIPTION = "Metrics about HBase RegionServer";
045
046  /**
047   * The name of the metrics context that metrics will be under in jmx
048   */
049  String METRICS_JMX_CONTEXT = "RegionServer,sub=" + METRICS_NAME;
050
051  /**
052   * Update the Put time histogram
053   *
054   * @param t time it took
055   */
056  void updatePut(long t);
057
058  /**
059   * Update the PutBatch time histogram if a batch contains a Put op
060   * @param t
061   */
062  void updatePutBatch(long t);
063
064  /**
065   * Update the Delete time histogram
066   *
067   * @param t time it took
068   */
069  void updateDelete(long t);
070
071  /**
072   * Update the Delete time histogram if a batch contains a delete op
073   * @param t time it took
074   */
075  void updateDeleteBatch(long t);
076
077  /**
078   * Update checkAndDelete histogram
079   * @param t time it took
080   */
081  void updateCheckAndDelete(long t);
082
083  /**
084   * Update checkAndPut histogram
085   * @param t time it took
086   */
087  void updateCheckAndPut(long t);
088
089  /**
090   * Update the Get time histogram .
091   *
092   * @param t time it took
093   */
094  void updateGet(long t);
095
096  /**
097   * Update the Increment time histogram.
098   *
099   * @param t time it took
100   */
101  void updateIncrement(long t);
102
103  /**
104   * Update the Append time histogram.
105   *
106   * @param t time it took
107   */
108  void updateAppend(long t);
109
110  /**
111   * Update the Replay time histogram.
112   *
113   * @param t time it took
114   */
115  void updateReplay(long t);
116
117  /**
118   * Update the scan size.
119   *
120   * @param scanSize size of the scan
121   */
122  void updateScanSize(long scanSize);
123
124  /**
125   * Update the scan time.
126   * */
127  void updateScanTime(long t);
128
129  /**
130   * Increment the number of slow Puts that have happened.
131   */
132  void incrSlowPut();
133
134  /**
135   * Increment the number of slow Deletes that have happened.
136   */
137  void incrSlowDelete();
138
139  /**
140   * Increment the number of slow Gets that have happened.
141   */
142  void incrSlowGet();
143
144  /**
145   * Increment the number of slow Increments that have happened.
146   */
147  void incrSlowIncrement();
148
149  /**
150   * Increment the number of slow Appends that have happened.
151   */
152  void incrSlowAppend();
153
154  /**
155   * Update the split transaction time histogram
156   * @param t time it took, in milliseconds
157   */
158  void updateSplitTime(long t);
159
160  /**
161   * Increment number of a requested splits
162   */
163  void incrSplitRequest();
164
165  /**
166   * Increment number of successful splits
167   */
168  void incrSplitSuccess();
169
170  /**
171   * Update the flush time histogram
172   * @param t time it took, in milliseconds
173   */
174  void updateFlushTime(long t);
175
176  /**
177   * Update the flush memstore size histogram
178   * @param bytes the number of bytes in the memstore
179   */
180  void updateFlushMemStoreSize(long bytes);
181
182  /**
183   * Update the flush output file size histogram
184   * @param bytes the number of bytes in the output file
185   */
186  void updateFlushOutputSize(long bytes);
187
188  /**
189   * Update the compaction time histogram, both major and minor
190   * @param isMajor whether compaction is a major compaction
191   * @param t time it took, in milliseconds
192   */
193  void updateCompactionTime(boolean isMajor, long t);
194
195  /**
196   * Update the compaction input number of files histogram
197   * @param isMajor whether compaction is a major compaction
198   * @param c number of files
199   */
200  void updateCompactionInputFileCount(boolean isMajor, long c);
201
202  /**
203   * Update the compaction total input file size histogram
204   * @param isMajor whether compaction is a major compaction
205   * @param bytes the number of bytes of the compaction input file
206   */
207  void updateCompactionInputSize(boolean isMajor, long bytes);
208
209  /**
210   * Update the compaction output number of files histogram
211   * @param isMajor whether compaction is a major compaction
212   * @param c number of files
213   */
214  void updateCompactionOutputFileCount(boolean isMajor, long c);
215
216  /**
217   * Update the compaction total output file size
218   * @param isMajor whether compaction is a major compaction
219   * @param bytes the number of bytes of the compaction input file
220   */
221  void updateCompactionOutputSize(boolean isMajor, long bytes);
222
223  // Strings used for exporting to metrics system.
224  String REGION_COUNT = "regionCount";
225  String REGION_COUNT_DESC = "Number of regions";
226  String STORE_COUNT = "storeCount";
227  String STORE_COUNT_DESC = "Number of Stores";
228  String WALFILE_COUNT = "hlogFileCount";
229  String WALFILE_COUNT_DESC = "Number of WAL Files";
230  String WALFILE_SIZE = "hlogFileSize";
231  String WALFILE_SIZE_DESC = "Size of all WAL Files";
232  String STOREFILE_COUNT = "storeFileCount";
233  String STOREFILE_COUNT_DESC = "Number of Store Files";
234  String MEMSTORE_SIZE = "memStoreSize";
235  String MEMSTORE_SIZE_DESC = "Size of the memstore";
236  String STOREFILE_SIZE = "storeFileSize";
237  String MAX_STORE_FILE_AGE = "maxStoreFileAge";
238  String MIN_STORE_FILE_AGE = "minStoreFileAge";
239  String AVG_STORE_FILE_AGE = "avgStoreFileAge";
240  String NUM_REFERENCE_FILES = "numReferenceFiles";
241  String MAX_STORE_FILE_AGE_DESC = "Max age of store files hosted on this RegionServer";
242  String MIN_STORE_FILE_AGE_DESC = "Min age of store files hosted on this RegionServer";
243  String AVG_STORE_FILE_AGE_DESC = "Average age of store files hosted on this RegionServer";
244  String NUM_REFERENCE_FILES_DESC = "Number of reference file on this RegionServer";
245  String STOREFILE_SIZE_DESC = "Size of storefiles being served.";
246  String TOTAL_REQUEST_COUNT = "totalRequestCount";
247  String TOTAL_REQUEST_COUNT_DESC =
248      "Total number of requests this RegionServer has answered; increments the count once for " +
249          "EVERY access whether an admin operation, a Scan, a Put or Put of 1M rows, or a Get " +
250          "of a non-existent row";
251  String TOTAL_ROW_ACTION_REQUEST_COUNT = "totalRowActionRequestCount";
252  String TOTAL_ROW_ACTION_REQUEST_COUNT_DESC =
253      "Total number of region requests this RegionServer has answered; counts by row-level " +
254          "action at the RPC Server (Sums 'readRequestsCount' and 'writeRequestsCount'); counts" +
255          "once per access whether a Put of 1M rows or a Get that returns 1M Results";
256  String READ_REQUEST_COUNT = "readRequestCount";
257  String READ_REQUEST_COUNT_DESC =
258      "Number of read requests with non-empty Results that this RegionServer has answered.";
259  String FILTERED_READ_REQUEST_COUNT = "filteredReadRequestCount";
260  String FILTERED_READ_REQUEST_COUNT_DESC =
261    "Number of filtered read requests this RegionServer has answered.";
262  String WRITE_REQUEST_COUNT = "writeRequestCount";
263  String WRITE_REQUEST_COUNT_DESC =
264      "Number of mutation requests this RegionServer has answered.";
265  String CHECK_MUTATE_FAILED_COUNT = "checkMutateFailedCount";
266  String CHECK_MUTATE_FAILED_COUNT_DESC =
267      "Number of Check and Mutate calls that failed the checks.";
268  String CHECK_MUTATE_PASSED_COUNT = "checkMutatePassedCount";
269  String CHECK_MUTATE_PASSED_COUNT_DESC =
270      "Number of Check and Mutate calls that passed the checks.";
271  String STOREFILE_INDEX_SIZE = "storeFileIndexSize";
272  String STOREFILE_INDEX_SIZE_DESC = "Size of indexes in storefiles on disk.";
273  String STATIC_INDEX_SIZE = "staticIndexSize";
274  String STATIC_INDEX_SIZE_DESC = "Uncompressed size of the static indexes.";
275  String STATIC_BLOOM_SIZE = "staticBloomSize";
276  String STATIC_BLOOM_SIZE_DESC =
277      "Uncompressed size of the static bloom filters.";
278  String NUMBER_OF_MUTATIONS_WITHOUT_WAL = "mutationsWithoutWALCount";
279  String NUMBER_OF_MUTATIONS_WITHOUT_WAL_DESC =
280      "Number of mutations that have been sent by clients with the write ahead logging turned off.";
281  String DATA_SIZE_WITHOUT_WAL = "mutationsWithoutWALSize";
282  String DATA_SIZE_WITHOUT_WAL_DESC =
283      "Size of data that has been sent by clients with the write ahead logging turned off.";
284  String PERCENT_FILES_LOCAL = "percentFilesLocal";
285  String PERCENT_FILES_LOCAL_DESC =
286      "The percent of HFiles that are stored on the local hdfs data node.";
287  String PERCENT_FILES_LOCAL_SECONDARY_REGIONS = "percentFilesLocalSecondaryRegions";
288  String PERCENT_FILES_LOCAL_SECONDARY_REGIONS_DESC =
289    "The percent of HFiles used by secondary regions that are stored on the local hdfs data node.";
290  String SPLIT_QUEUE_LENGTH = "splitQueueLength";
291  String SPLIT_QUEUE_LENGTH_DESC = "Length of the queue for splits.";
292  String COMPACTION_QUEUE_LENGTH = "compactionQueueLength";
293  String LARGE_COMPACTION_QUEUE_LENGTH = "largeCompactionQueueLength";
294  String SMALL_COMPACTION_QUEUE_LENGTH = "smallCompactionQueueLength";
295  String COMPACTION_QUEUE_LENGTH_DESC = "Length of the queue for compactions.";
296  String LARGE_COMPACTION_QUEUE_LENGTH_DESC = "Length of the queue for compactions with input size "
297      + "larger than throttle threshold (2.5GB by default)";
298  String SMALL_COMPACTION_QUEUE_LENGTH_DESC = "Length of the queue for compactions with input size "
299      + "smaller than throttle threshold (2.5GB by default)";
300  String FLUSH_QUEUE_LENGTH = "flushQueueLength";
301  String FLUSH_QUEUE_LENGTH_DESC = "Length of the queue for region flushes";
302  String BLOCK_CACHE_FREE_SIZE = "blockCacheFreeSize";
303  String BLOCK_CACHE_FREE_DESC =
304      "Size of the block cache that is not occupied.";
305  String BLOCK_CACHE_COUNT = "blockCacheCount";
306  String BLOCK_CACHE_COUNT_DESC = "Number of block in the block cache.";
307  String BLOCK_CACHE_SIZE = "blockCacheSize";
308  String BLOCK_CACHE_SIZE_DESC = "Size of the block cache.";
309  String BLOCK_CACHE_HIT_COUNT = "blockCacheHitCount";
310  String BLOCK_CACHE_HIT_COUNT_DESC = "Count of the hit on the block cache.";
311  String BLOCK_CACHE_PRIMARY_HIT_COUNT = "blockCacheHitCountPrimary";
312  String BLOCK_CACHE_PRIMARY_HIT_COUNT_DESC = "Count of hit on primary replica in the block cache.";
313  String BLOCK_CACHE_MISS_COUNT = "blockCacheMissCount";
314  String BLOCK_COUNT_MISS_COUNT_DESC =
315      "Number of requests for a block that missed the block cache.";
316  String BLOCK_CACHE_PRIMARY_MISS_COUNT = "blockCacheMissCountPrimary";
317  String BLOCK_COUNT_PRIMARY_MISS_COUNT_DESC =
318      "Number of requests for a block of primary replica that missed the block cache.";
319  String BLOCK_CACHE_EVICTION_COUNT = "blockCacheEvictionCount";
320  String BLOCK_CACHE_EVICTION_COUNT_DESC =
321      "Count of the number of blocks evicted from the block cache."
322      + "(Not including blocks evicted because of HFile removal)";
323  String BLOCK_CACHE_PRIMARY_EVICTION_COUNT = "blockCacheEvictionCountPrimary";
324  String BLOCK_CACHE_PRIMARY_EVICTION_COUNT_DESC =
325      "Count of the number of blocks evicted from primary replica in the block cache.";
326  String BLOCK_CACHE_HIT_PERCENT = "blockCacheCountHitPercent";
327  String BLOCK_CACHE_HIT_PERCENT_DESC =
328      "Percent of block cache requests that are hits";
329  String BLOCK_CACHE_EXPRESS_HIT_PERCENT = "blockCacheExpressHitPercent";
330  String BLOCK_CACHE_EXPRESS_HIT_PERCENT_DESC =
331      "The percent of the time that requests with the cache turned on hit the cache.";
332  String BLOCK_CACHE_FAILED_INSERTION_COUNT = "blockCacheFailedInsertionCount";
333  String BLOCK_CACHE_FAILED_INSERTION_COUNT_DESC = "Number of times that a block cache " +
334      "insertion failed. Usually due to size restrictions.";
335  String BLOCK_CACHE_DATA_MISS_COUNT = "blockCacheDataMissCount";
336  String BLOCK_CACHE_ENCODED_DATA_MISS_COUNT = "blockCacheEncodedDataMissCount";
337  String BLOCK_CACHE_LEAF_INDEX_MISS_COUNT = "blockCacheLeafIndexMissCount";
338  String BLOCK_CACHE_BLOOM_CHUNK_MISS_COUNT = "blockCacheBloomChunkMissCount";
339  String BLOCK_CACHE_META_MISS_COUNT = "blockCacheMetaMissCount";
340  String BLOCK_CACHE_ROOT_INDEX_MISS_COUNT = "blockCacheRootIndexMissCount";
341  String BLOCK_CACHE_INTERMEDIATE_INDEX_MISS_COUNT = "blockCacheIntermediateIndexMissCount";
342  String BLOCK_CACHE_FILE_INFO_MISS_COUNT = "blockCacheFileInfoMissCount";
343  String BLOCK_CACHE_GENERAL_BLOOM_META_MISS_COUNT = "blockCacheGeneralBloomMetaMissCount";
344  String BLOCK_CACHE_DELETE_FAMILY_BLOOM_MISS_COUNT = "blockCacheDeleteFamilyBloomMissCount";
345  String BLOCK_CACHE_TRAILER_MISS_COUNT = "blockCacheTrailerMissCount";
346  String BLOCK_CACHE_DATA_HIT_COUNT = "blockCacheDataHitCount";
347  String BLOCK_CACHE_ENCODED_DATA_HIT_COUNT = "blockCacheEncodedDataHitCount";
348  String BLOCK_CACHE_LEAF_INDEX_HIT_COUNT = "blockCacheLeafIndexHitCount";
349  String BLOCK_CACHE_BLOOM_CHUNK_HIT_COUNT = "blockCacheBloomChunkHitCount";
350  String BLOCK_CACHE_META_HIT_COUNT = "blockCacheMetaHitCount";
351  String BLOCK_CACHE_ROOT_INDEX_HIT_COUNT = "blockCacheRootIndexHitCount";
352  String BLOCK_CACHE_INTERMEDIATE_INDEX_HIT_COUNT = "blockCacheIntermediateIndexHitCount";
353  String BLOCK_CACHE_FILE_INFO_HIT_COUNT = "blockCacheFileInfoHitCount";
354  String BLOCK_CACHE_GENERAL_BLOOM_META_HIT_COUNT = "blockCacheGeneralBloomMetaHitCount";
355  String BLOCK_CACHE_DELETE_FAMILY_BLOOM_HIT_COUNT = "blockCacheDeleteFamilyBloomHitCount";
356  String BLOCK_CACHE_TRAILER_HIT_COUNT = "blockCacheTrailerHitCount";
357  String L1_CACHE_HIT_COUNT = "l1CacheHitCount";
358  String L1_CACHE_HIT_COUNT_DESC = "L1 cache hit count.";
359  String L1_CACHE_MISS_COUNT = "l1CacheMissCount";
360  String L1_CACHE_MISS_COUNT_DESC = "L1 cache miss count.";
361  String L1_CACHE_HIT_RATIO = "l1CacheHitRatio";
362  String L1_CACHE_HIT_RATIO_DESC = "L1 cache hit ratio.";
363  String L1_CACHE_MISS_RATIO = "l1CacheMissRatio";
364  String L1_CACHE_MISS_RATIO_DESC = "L1 cache miss ratio.";
365  String L2_CACHE_HIT_COUNT = "l2CacheHitCount";
366  String L2_CACHE_HIT_COUNT_DESC = "L2 cache hit count.";
367  String L2_CACHE_MISS_COUNT = "l2CacheMissCount";
368  String L2_CACHE_MISS_COUNT_DESC = "L2 cache miss count.";
369  String L2_CACHE_HIT_RATIO = "l2CacheHitRatio";
370  String L2_CACHE_HIT_RATIO_DESC = "L2 cache hit ratio.";
371  String L2_CACHE_MISS_RATIO = "l2CacheMissRatio";
372  String L2_CACHE_MISS_RATIO_DESC = "L2 cache miss ratio.";
373  String RS_START_TIME_NAME = "regionServerStartTime";
374  String ZOOKEEPER_QUORUM_NAME = "zookeeperQuorum";
375  String SERVER_NAME_NAME = "serverName";
376  String CLUSTER_ID_NAME = "clusterId";
377  String RS_START_TIME_DESC = "RegionServer Start Time";
378  String ZOOKEEPER_QUORUM_DESC = "ZooKeeper Quorum";
379  String SERVER_NAME_DESC = "Server Name";
380  String CLUSTER_ID_DESC = "Cluster Id";
381  String UPDATES_BLOCKED_TIME = "updatesBlockedTime";
382  String UPDATES_BLOCKED_DESC =
383      "Number of MS updates have been blocked so that the memstore can be flushed.";
384  String DELETE_KEY = "delete";
385  String CHECK_AND_DELETE_KEY = "checkAndDelete";
386  String CHECK_AND_PUT_KEY = "checkAndPut";
387  String DELETE_BATCH_KEY = "deleteBatch";
388  String GET_SIZE_KEY = "getSize";
389  String GET_KEY = "get";
390  String INCREMENT_KEY = "increment";
391  String PUT_KEY = "put";
392  String PUT_BATCH_KEY = "putBatch";
393  String APPEND_KEY = "append";
394  String REPLAY_KEY = "replay";
395  String SCAN_KEY = "scan";
396  String SCAN_SIZE_KEY = "scanSize";
397  String SCAN_TIME_KEY = "scanTime";
398
399  String SLOW_PUT_KEY = "slowPutCount";
400  String SLOW_GET_KEY = "slowGetCount";
401  String SLOW_DELETE_KEY = "slowDeleteCount";
402  String SLOW_INCREMENT_KEY = "slowIncrementCount";
403  String SLOW_APPEND_KEY = "slowAppendCount";
404  String SLOW_PUT_DESC =
405      "The number of batches containing puts that took over 1000ms to complete";
406  String SLOW_DELETE_DESC =
407      "The number of batches containing delete(s) that took over 1000ms to complete";
408  String SLOW_GET_DESC = "The number of Gets that took over 1000ms to complete";
409  String SLOW_INCREMENT_DESC =
410      "The number of Increments that took over 1000ms to complete";
411  String SLOW_APPEND_DESC =
412      "The number of Appends that took over 1000ms to complete";
413
414  String FLUSHED_CELLS = "flushedCellsCount";
415  String FLUSHED_CELLS_DESC = "The number of cells flushed to disk";
416  String FLUSHED_CELLS_SIZE = "flushedCellsSize";
417  String FLUSHED_CELLS_SIZE_DESC = "The total amount of data flushed to disk, in bytes";
418  String COMPACTED_CELLS = "compactedCellsCount";
419  String COMPACTED_CELLS_DESC = "The number of cells processed during minor compactions";
420  String COMPACTED_CELLS_SIZE = "compactedCellsSize";
421  String COMPACTED_CELLS_SIZE_DESC =
422      "The total amount of data processed during minor compactions, in bytes";
423  String MAJOR_COMPACTED_CELLS = "majorCompactedCellsCount";
424  String MAJOR_COMPACTED_CELLS_DESC =
425      "The number of cells processed during major compactions";
426  String MAJOR_COMPACTED_CELLS_SIZE = "majorCompactedCellsSize";
427  String MAJOR_COMPACTED_CELLS_SIZE_DESC =
428      "The total amount of data processed during major compactions, in bytes";
429  String CELLS_COUNT_COMPACTED_TO_MOB = "cellsCountCompactedToMob";
430  String CELLS_COUNT_COMPACTED_TO_MOB_DESC =
431      "The number of cells moved to mob during compaction";
432  String CELLS_COUNT_COMPACTED_FROM_MOB = "cellsCountCompactedFromMob";
433  String CELLS_COUNT_COMPACTED_FROM_MOB_DESC =
434      "The number of cells moved from mob during compaction";
435  String CELLS_SIZE_COMPACTED_TO_MOB = "cellsSizeCompactedToMob";
436  String CELLS_SIZE_COMPACTED_TO_MOB_DESC =
437      "The total amount of cells move to mob during compaction, in bytes";
438  String CELLS_SIZE_COMPACTED_FROM_MOB = "cellsSizeCompactedFromMob";
439  String CELLS_SIZE_COMPACTED_FROM_MOB_DESC =
440      "The total amount of cells move from mob during compaction, in bytes";
441  String MOB_FLUSH_COUNT = "mobFlushCount";
442  String MOB_FLUSH_COUNT_DESC = "The number of the flushes in mob-enabled stores";
443  String MOB_FLUSHED_CELLS_COUNT = "mobFlushedCellsCount";
444  String MOB_FLUSHED_CELLS_COUNT_DESC = "The number of mob cells flushed to disk";
445  String MOB_FLUSHED_CELLS_SIZE = "mobFlushedCellsSize";
446  String MOB_FLUSHED_CELLS_SIZE_DESC = "The total amount of mob cells flushed to disk, in bytes";
447  String MOB_SCAN_CELLS_COUNT = "mobScanCellsCount";
448  String MOB_SCAN_CELLS_COUNT_DESC = "The number of scanned mob cells";
449  String MOB_SCAN_CELLS_SIZE = "mobScanCellsSize";
450  String MOB_SCAN_CELLS_SIZE_DESC = "The total amount of scanned mob cells, in bytes";
451  String MOB_FILE_CACHE_ACCESS_COUNT = "mobFileCacheAccessCount";
452  String MOB_FILE_CACHE_ACCESS_COUNT_DESC = "The count of accesses to the mob file cache";
453  String MOB_FILE_CACHE_MISS_COUNT = "mobFileCacheMissCount";
454  String MOB_FILE_CACHE_MISS_COUNT_DESC = "The count of misses to the mob file cache";
455  String MOB_FILE_CACHE_HIT_PERCENT = "mobFileCacheHitPercent";
456  String MOB_FILE_CACHE_HIT_PERCENT_DESC = "The hit percent to the mob file cache";
457  String MOB_FILE_CACHE_EVICTED_COUNT = "mobFileCacheEvictedCount";
458  String MOB_FILE_CACHE_EVICTED_COUNT_DESC = "The number of items evicted from the mob file cache";
459  String MOB_FILE_CACHE_COUNT = "mobFileCacheCount";
460  String MOB_FILE_CACHE_COUNT_DESC = "The count of cached mob files";
461
462  String HEDGED_READS = "hedgedReads";
463  String HEDGED_READS_DESC = "The number of times we started a hedged read";
464  String HEDGED_READ_WINS = "hedgedReadWins";
465  String HEDGED_READ_WINS_DESC =
466      "The number of times we started a hedged read and a hedged read won";
467
468  String BLOCKED_REQUESTS_COUNT = "blockedRequestCount";
469  String BLOCKED_REQUESTS_COUNT_DESC = "The number of blocked requests because of memstore size is "
470      + "larger than blockingMemStoreSize";
471
472  String SPLIT_KEY = "splitTime";
473  String SPLIT_REQUEST_KEY = "splitRequestCount";
474  String SPLIT_REQUEST_DESC = "Number of splits requested";
475  String SPLIT_SUCCESS_KEY = "splitSuccessCount";
476  String SPLIT_SUCCESS_DESC = "Number of successfully executed splits";
477
478  String FLUSH_TIME = "flushTime";
479  String FLUSH_TIME_DESC = "Histogram for the time in millis for memstore flush";
480  String FLUSH_MEMSTORE_SIZE = "flushMemstoreSize";
481  String FLUSH_MEMSTORE_SIZE_DESC = "Histogram for number of bytes in the memstore for a flush";
482  String FLUSH_OUTPUT_SIZE = "flushOutputSize";
483  String FLUSH_OUTPUT_SIZE_DESC = "Histogram for number of bytes in the resulting file for a flush";
484  String FLUSHED_OUTPUT_BYTES = "flushedOutputBytes";
485  String FLUSHED_OUTPUT_BYTES_DESC = "Total number of bytes written from flush";
486  String FLUSHED_MEMSTORE_BYTES = "flushedMemstoreBytes";
487  String FLUSHED_MEMSTORE_BYTES_DESC = "Total number of bytes of cells in memstore from flush";
488
489  String COMPACTION_TIME = "compactionTime";
490  String COMPACTION_TIME_DESC
491    = "Histogram for the time in millis for compaction, both major and minor";
492  String COMPACTION_INPUT_FILE_COUNT = "compactionInputFileCount";
493  String COMPACTION_INPUT_FILE_COUNT_DESC
494    = "Histogram for the compaction input number of files, both major and minor";
495  String COMPACTION_INPUT_SIZE = "compactionInputSize";
496  String COMPACTION_INPUT_SIZE_DESC
497    = "Histogram for the compaction total input file sizes, both major and minor";
498  String COMPACTION_OUTPUT_FILE_COUNT = "compactionOutputFileCount";
499  String COMPACTION_OUTPUT_FILE_COUNT_DESC
500    = "Histogram for the compaction output number of files, both major and minor";
501  String COMPACTION_OUTPUT_SIZE = "compactionOutputSize";
502  String COMPACTION_OUTPUT_SIZE_DESC
503    = "Histogram for the compaction total output file sizes, both major and minor";
504  String COMPACTED_INPUT_BYTES = "compactedInputBytes";
505  String COMPACTED_INPUT_BYTES_DESC
506    = "Total number of bytes that is read for compaction, both major and minor";
507  String COMPACTED_OUTPUT_BYTES = "compactedOutputBytes";
508  String COMPACTED_OUTPUT_BYTES_DESC
509    = "Total number of bytes that is output from compaction, both major and minor";
510
511  String MAJOR_COMPACTION_TIME = "majorCompactionTime";
512  String MAJOR_COMPACTION_TIME_DESC
513    = "Histogram for the time in millis for compaction, major only";
514  String MAJOR_COMPACTION_INPUT_FILE_COUNT = "majorCompactionInputFileCount";
515  String MAJOR_COMPACTION_INPUT_FILE_COUNT_DESC
516    = "Histogram for the compaction input number of files, major only";
517  String MAJOR_COMPACTION_INPUT_SIZE = "majorCompactionInputSize";
518  String MAJOR_COMPACTION_INPUT_SIZE_DESC
519    = "Histogram for the compaction total input file sizes, major only";
520  String MAJOR_COMPACTION_OUTPUT_FILE_COUNT = "majorCompactionOutputFileCount";
521  String MAJOR_COMPACTION_OUTPUT_FILE_COUNT_DESC
522    = "Histogram for the compaction output number of files, major only";
523  String MAJOR_COMPACTION_OUTPUT_SIZE = "majorCompactionOutputSize";
524  String MAJOR_COMPACTION_OUTPUT_SIZE_DESC
525    = "Histogram for the compaction total output file sizes, major only";
526  String MAJOR_COMPACTED_INPUT_BYTES = "majorCompactedInputBytes";
527  String MAJOR_COMPACTED_INPUT_BYTES_DESC
528    = "Total number of bytes that is read for compaction, major only";
529  String MAJOR_COMPACTED_OUTPUT_BYTES = "majorCompactedOutputBytes";
530  String MAJOR_COMPACTED_OUTPUT_BYTES_DESC
531    = "Total number of bytes that is output from compaction, major only";
532
533  String RPC_GET_REQUEST_COUNT = "rpcGetRequestCount";
534  String RPC_GET_REQUEST_COUNT_DESC = "Number of rpc get requests this RegionServer has answered.";
535  String RPC_SCAN_REQUEST_COUNT = "rpcScanRequestCount";
536  String RPC_SCAN_REQUEST_COUNT_DESC =
537      "Number of rpc scan requests this RegionServer has answered.";
538  String RPC_MULTI_REQUEST_COUNT = "rpcMultiRequestCount";
539  String RPC_MULTI_REQUEST_COUNT_DESC =
540      "Number of rpc multi requests this RegionServer has answered.";
541  String RPC_MUTATE_REQUEST_COUNT = "rpcMutateRequestCount";
542  String RPC_MUTATE_REQUEST_COUNT_DESC =
543      "Number of rpc mutation requests this RegionServer has answered.";
544  String AVERAGE_REGION_SIZE = "averageRegionSize";
545  String AVERAGE_REGION_SIZE_DESC =
546      "Average region size over the RegionServer including memstore and storefile sizes.";
547}