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HBASE-27159 Emit source metrics for BlockCacheExpressHitPercent (#4830) 

Signed-off-by: Andrew Purtell <apurtell@apache.org>
This commit is contained in:
d-c-manning 2022-10-17 14:18:37 -07:00 committed by Andrew Purtell
parent 2d95ce072e
commit fc4191afa1
6 changed files with 43 additions and 0 deletions
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6
hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSource.java
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@ -329,12 +329,18 @@ public interface MetricsRegionServerSource extends BaseSource, JvmPauseMonitorSo
String BLOCK_CACHE_HIT_COUNT_DESC = "Count of the hit on the block cache.";
String BLOCK_CACHE_PRIMARY_HIT_COUNT = "blockCacheHitCountPrimary";
String BLOCK_CACHE_PRIMARY_HIT_COUNT_DESC = "Count of hit on primary replica in the block cache.";
String BLOCK_CACHE_HIT_CACHING_COUNT = "blockCacheHitCachingCount";
String BLOCK_CACHE_HIT_CACHING_COUNT_DESC =
"Count of the hit on the block cache, for cacheable requests.";
String BLOCK_CACHE_MISS_COUNT = "blockCacheMissCount";
String BLOCK_COUNT_MISS_COUNT_DESC =
"Number of requests for a block that missed the block cache.";
String BLOCK_CACHE_PRIMARY_MISS_COUNT = "blockCacheMissCountPrimary";
String BLOCK_COUNT_PRIMARY_MISS_COUNT_DESC =
"Number of requests for a block of primary replica that missed the block cache.";
String BLOCK_CACHE_MISS_CACHING_COUNT = "blockCacheMissCachingCount";
String BLOCK_COUNT_MISS_CACHING_COUNT_DESC =
"Number of requests for a block that missed the block cache, for cacheable requests.";
String BLOCK_CACHE_EVICTION_COUNT = "blockCacheEvictionCount";
String BLOCK_CACHE_EVICTION_COUNT_DESC =
"Count of the number of blocks evicted from the block cache."

10
hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapper.java
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@ -289,6 +289,11 @@ public interface MetricsRegionServerWrapper {
*/
long getBlockCachePrimaryHitCount();
/**
* Get the count of hits to the block cache, for cacheable requests only.
*/
long getBlockCacheHitCachingCount();
/**
* Get the count of misses to the block cache.
*/
@ -299,6 +304,11 @@ public interface MetricsRegionServerWrapper {
*/
long getBlockCachePrimaryMissCount();
/**
* Get the count of misses to the block cache, for cacheable requests only.
*/
long getBlockCacheMissCachingCount();
/**
* Get the number of items evicted from the block cache.
*/

5
hbase-hadoop2-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceImpl.java
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@ -370,11 +370,16 @@ public class MetricsRegionServerSourceImpl extends BaseSourceImpl
rsWrap.getBlockCacheHitCount())
.addCounter(Interns.info(BLOCK_CACHE_PRIMARY_HIT_COUNT, BLOCK_CACHE_PRIMARY_HIT_COUNT_DESC),
rsWrap.getBlockCachePrimaryHitCount())
.addCounter(Interns.info(BLOCK_CACHE_HIT_CACHING_COUNT, BLOCK_CACHE_HIT_CACHING_COUNT_DESC),
rsWrap.getBlockCacheHitCachingCount())
.addCounter(Interns.info(BLOCK_CACHE_MISS_COUNT, BLOCK_COUNT_MISS_COUNT_DESC),
rsWrap.getBlockCacheMissCount())
.addCounter(
Interns.info(BLOCK_CACHE_PRIMARY_MISS_COUNT, BLOCK_COUNT_PRIMARY_MISS_COUNT_DESC),
rsWrap.getBlockCachePrimaryMissCount())
.addCounter(
Interns.info(BLOCK_CACHE_MISS_CACHING_COUNT, BLOCK_COUNT_MISS_CACHING_COUNT_DESC),
rsWrap.getBlockCacheMissCachingCount())
.addCounter(Interns.info(BLOCK_CACHE_EVICTION_COUNT, BLOCK_CACHE_EVICTION_COUNT_DESC),
rsWrap.getBlockCacheEvictedCount())
.addCounter(

10
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperImpl.java
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@ -328,6 +328,11 @@ class MetricsRegionServerWrapperImpl implements MetricsRegionServerWrapper {
return this.cacheStats != null ? this.cacheStats.getPrimaryHitCount() : 0L;
}
@Override
public long getBlockCacheHitCachingCount() {
return this.cacheStats != null ? this.cacheStats.getHitCachingCount() : 0L;
}
@Override
public long getBlockCacheMissCount() {
return this.cacheStats != null ? this.cacheStats.getMissCount() : 0L;
@ -338,6 +343,11 @@ class MetricsRegionServerWrapperImpl implements MetricsRegionServerWrapper {
return this.cacheStats != null ? this.cacheStats.getPrimaryMissCount() : 0L;
}
@Override
public long getBlockCacheMissCachingCount() {
return this.cacheStats != null ? this.cacheStats.getMissCachingCount() : 0L;
}
@Override
public long getBlockCacheEvictedCount() {
return this.cacheStats != null ? this.cacheStats.getEvictedCount() : 0L;

10
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerWrapperStub.java
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@ -322,6 +322,11 @@ public class MetricsRegionServerWrapperStub implements MetricsRegionServerWrappe
return 422;
}
@Override
public long getBlockCacheHitCachingCount() {
return 16;
}
@Override
public long getBlockCacheMissCount() {
return 417;
@ -332,6 +337,11 @@ public class MetricsRegionServerWrapperStub implements MetricsRegionServerWrappe
return 421;
}
@Override
public long getBlockCacheMissCachingCount() {
return 17;
}
@Override
public long getBlockCacheEvictedCount() {
return 418;

2
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMetricsRegionServer.java
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@ -111,7 +111,9 @@ public class TestMetricsRegionServer {
HELPER.assertGauge("blockCacheDataBlockCount", 300, serverSource);
HELPER.assertGauge("blockCacheSize", 415, serverSource);
HELPER.assertCounter("blockCacheHitCount", 416, serverSource);
HELPER.assertCounter("blockCacheHitCachingCount", 16, serverSource);
HELPER.assertCounter("blockCacheMissCount", 417, serverSource);
HELPER.assertCounter("blockCacheMissCachingCount", 17, serverSource);
HELPER.assertCounter("blockCacheEvictionCount", 418, serverSource);
HELPER.assertGauge("blockCacheCountHitPercent", 98, serverSource);
HELPER.assertGauge("blockCacheExpressHitPercent", 97, serverSource);