From 779ba75df0f839fb5d5f1fb5266110d05e14295d Mon Sep 17 00:00:00 2001
From: Biju Nair
Date: Fri, 18 Aug 2017 17:14:54 -0400
Subject: [PATCH] HBASE-18532 Improve cache related stats rendered on RS UI
---
.../hadoop/hbase/io/hfile/MemcachedBlockCache.java | 10 ++++++++
.../hbase/tmpl/regionserver/BlockCacheTmpl.jamon | 8 +++---
.../apache/hadoop/hbase/io/hfile/BlockCache.java | 12 +++++++++
.../hadoop/hbase/io/hfile/CombinedBlockCache.java | 10 ++++++++
.../hadoop/hbase/io/hfile/LruBlockCache.java | 30 +++++++++++++++++++++-
.../hadoop/hbase/io/hfile/bucket/BucketCache.java | 10 ++++++++
.../hbase/regionserver/TestHeapMemoryManager.java | 10 ++++++++
7 files changed, 85 insertions(+), 5 deletions(-)
diff --git a/hbase-external-blockcache/src/main/java/org/apache/hadoop/hbase/io/hfile/MemcachedBlockCache.java b/hbase-external-blockcache/src/main/java/org/apache/hadoop/hbase/io/hfile/MemcachedBlockCache.java
index e74176080b..965bcbe927 100644
--- a/hbase-external-blockcache/src/main/java/org/apache/hadoop/hbase/io/hfile/MemcachedBlockCache.java
+++ b/hbase-external-blockcache/src/main/java/org/apache/hadoop/hbase/io/hfile/MemcachedBlockCache.java
@@ -209,11 +209,21 @@ public class MemcachedBlockCache implements BlockCache {
}
@Override
+ public long getCurrentDataSize() {
+ return 0;
+ }
+
+ @Override
public long getBlockCount() {
return 0;
}
@Override
+ public long getDataBlockCount() {
+ return 0;
+ }
+
+ @Override
public Iterator iterator() {
return new Iterator() {
@Override
diff --git a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
index daa5d76877..3afd4f9b86 100644
--- a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
+++ b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
@@ -327,25 +327,25 @@ are combined counts. Request count is sum of hits and misses.
%if>
| Count |
- <% String.format("%,d", cbsbf.getCount()) %> |
+ <% String.format("%,d", bc.getBlockCount()) %> |
Count of Blocks |
<%if !bucketCache %>
| Count |
- <% String.format("%,d", cbsbf.getDataCount()) %> |
+ <% String.format("%,d", bc.getDataBlockCount()) %> |
Count of DATA Blocks |
%if>
| Size |
- <% TraditionalBinaryPrefix.long2String(cbsbf.getSize(), "B", 1) %> |
+ <% TraditionalBinaryPrefix.long2String(bc.getCurrentSize(), "B", 1) %> |
Size of Blocks |
<%if !bucketCache %>
| Size |
- <% TraditionalBinaryPrefix.long2String(cbsbf.getDataSize(), "B", 1) %> |
+ <% TraditionalBinaryPrefix.long2String(bc.getCurrentDataSize(), "B", 1) %> |
Size of DATA Blocks |
%if>
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCache.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCache.java
index cef7e02d45..3674033eb6 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCache.java
@@ -103,10 +103,22 @@ public interface BlockCache extends Iterable {
long getCurrentSize();
/**
+ * Returns the occupied size of data blocks, in bytes.
+ * @return occupied space in cache, in bytes
+ */
+ long getCurrentDataSize();
+
+ /**
* Returns the number of blocks currently cached in the block cache.
* @return number of blocks in the cache
*/
long getBlockCount();
+
+ /**
+ * Returns the number of data blocks currently cached in the block cache.
+ * @return number of blocks in the cache
+ */
+ long getDataBlockCount();
/**
* @return Iterator over the blocks in the cache.
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.java
index 3efd3fe784..abccdfc24d 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CombinedBlockCache.java
@@ -114,6 +114,11 @@ public class CombinedBlockCache implements ResizableBlockCache, HeapSize {
}
@Override
+ public long getCurrentDataSize() {
+ return lruCache.getCurrentDataSize() + l2Cache.getCurrentDataSize();
+ }
+
+ @Override
public long getFreeSize() {
return lruCache.getFreeSize() + l2Cache.getFreeSize();
}
@@ -128,6 +133,11 @@ public class CombinedBlockCache implements ResizableBlockCache, HeapSize {
return lruCache.getBlockCount() + l2Cache.getBlockCount();
}
+ @Override
+ public long getDataBlockCount() {
+ return lruCache.getDataBlockCount() + l2Cache.getDataBlockCount();
+ }
+
public static class CombinedCacheStats extends CacheStats {
private final CacheStats lruCacheStats;
private final CacheStats bucketCacheStats;
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
index c1870221ac..469677771d 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/LruBlockCache.java
@@ -176,9 +176,15 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
/** Current size of cache */
private final AtomicLong size;
+ /** Current size of data blocks */
+ private final AtomicLong dataBlockSize;
+
/** Current number of cached elements */
private final AtomicLong elements;
+ /** Current number of cached data block elements */
+ private final AtomicLong dataBlockElements;
+
/** Cache access count (sequential ID) */
private final AtomicLong count;
@@ -314,6 +320,8 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
this.stats = new CacheStats(this.getClass().getSimpleName());
this.count = new AtomicLong(0);
this.elements = new AtomicLong(0);
+ this.dataBlockElements = new AtomicLong(0);
+ this.dataBlockSize = new AtomicLong(0);
this.overhead = calculateOverhead(maxSize, blockSize, mapConcurrencyLevel);
this.size = new AtomicLong(this.overhead);
this.hardCapacityLimitFactor = hardLimitFactor;
@@ -399,6 +407,9 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
long newSize = updateSizeMetrics(cb, false);
map.put(cacheKey, cb);
long val = elements.incrementAndGet();
+ if (buf.getBlockType().isData()) {
+ dataBlockElements.incrementAndGet();
+ }
if (LOG.isTraceEnabled()) {
long size = map.size();
assertCounterSanity(size, val);
@@ -454,9 +465,13 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
*/
private long updateSizeMetrics(LruCachedBlock cb, boolean evict) {
long heapsize = cb.heapSize();
+ BlockType bt = cb.getBuffer().getBlockType();
if (evict) {
heapsize *= -1;
}
+ if (bt != null && bt.isData()) {
+ dataBlockSize.addAndGet(heapsize);
+ }
return size.addAndGet(heapsize);
}
@@ -561,6 +576,9 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
long size = map.size();
assertCounterSanity(size, val);
}
+ if (block.getBuffer().getBlockType().isData()) {
+ dataBlockElements.decrementAndGet();
+ }
if (evictedByEvictionProcess) {
// When the eviction of the block happened because of invalidation of HFiles, no need to
// update the stats counter.
@@ -831,6 +849,11 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
}
@Override
+ public long getCurrentDataSize() {
+ return this.dataBlockSize.get();
+ }
+
+ @Override
public long getFreeSize() {
return getMaxSize() - getCurrentSize();
}
@@ -845,6 +868,11 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
return this.elements.get();
}
+ @Override
+ public long getDataBlockCount() {
+ return this.dataBlockElements.get();
+ }
+
EvictionThread getEvictionThread() {
return this.evictionThread;
}
@@ -958,7 +986,7 @@ public class LruBlockCache implements ResizableBlockCache, HeapSize {
}
public final static long CACHE_FIXED_OVERHEAD = ClassSize.align(
- (4 * Bytes.SIZEOF_LONG) + (9 * ClassSize.REFERENCE) +
+ (4 * Bytes.SIZEOF_LONG) + (11 * ClassSize.REFERENCE) +
(6 * Bytes.SIZEOF_FLOAT) + (2 * Bytes.SIZEOF_BOOLEAN)
+ ClassSize.OBJECT);
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
index 79b1f4d7cb..939d53a903 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
@@ -1190,6 +1190,11 @@ public class BucketCache implements BlockCache, HeapSize {
}
@Override
+ public long getCurrentDataSize() {
+ return size();
+ }
+
+ @Override
public long getFreeSize() {
return this.bucketAllocator.getFreeSize();
}
@@ -1200,6 +1205,11 @@ public class BucketCache implements BlockCache, HeapSize {
}
@Override
+ public long getDataBlockCount() {
+ return getBlockCount();
+ }
+
+ @Override
public long getCurrentSize() {
return this.bucketAllocator.getUsedSize();
}
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHeapMemoryManager.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHeapMemoryManager.java
index e1a8d5fb64..0840ac5027 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHeapMemoryManager.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHeapMemoryManager.java
@@ -748,11 +748,21 @@ public class TestHeapMemoryManager {
}
@Override
+ public long getCurrentDataSize() {
+ return 0;
+ }
+
+ @Override
public long getBlockCount() {
return 0;
}
@Override
+ public long getDataBlockCount() {
+ return 0;
+ }
+
+ @Override
public void setMaxSize(long size) {
this.maxSize = size;
}
--
2.11.0 (Apple Git-81)