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HBASE-8315 Documentation should have more information of LRU Stats

This commit is contained in:
Michael Stack 2014-06-13 11:02:23 -07:00
parent 91991b72af
commit 492f1f6d44
1 changed files with 15 additions and 15 deletions
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30
hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/regionserver/BlockCacheTmpl.jamon
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@ -110,10 +110,10 @@ org.apache.hadoop.util.StringUtils;
<tr>
<td>Implementation</td>
<td><a href="<% bcUrl %>"><% bcName %></a></td>
<td>Block Cache implementing class</td>
<td>Block cache implementing class</td>
</tr>
</table>
<p>See <a href="http://hbase.apache.org/book.html#block.cache">Block Cache</a> in the HBase Reference Guide for help.</p>
<p>See <a href="http://hbase.apache.org/book.html#block.cache">block cache</a> in the HBase Reference Guide for help.</p>
</%def>
<%def bc_config>
@ -185,28 +185,28 @@ org.apache.hadoop.util.StringUtils;
</tr>
<tr>
<td>Size</td>
<td><% StringUtils.humanReadableInt(cacheConfig.getBlockCache().size()) %></td>
<td>Total size of Block Cache (bytes)</td>
<td><% StringUtils.humanReadableInt(cacheConfig.getBlockCache().getCurrentSize()) %></td>
<td>Current size of block cache in use (bytes)</td>
</tr>
<tr>
<td>Free</td>
<td><% StringUtils.humanReadableInt(cacheConfig.getBlockCache().getFreeSize()) %></td>
<td>Free space in Block Cache (bytes)</td>
<td>The total free memory currently available to store more cache entries (bytes)</td>
</tr>
<tr>
<td>Count</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getBlockCount()) %></td>
<td>Number of blocks in Block Cache</td>
<td>Number of blocks in block cache</td>
</tr>
<tr>
<td>Evicted</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getStats().getEvictedCount()) %></td>
<td>Number of blocks evicted</td>
<td>The total number of blocks evicted</td>
</tr>
<tr>
<td>Evictions</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getStats().getEvictionCount()) %></td>
<td>Number of times an eviction occurred</td>
<td>The total number of times an eviction has occurred</td>
</tr>
<tr>
<td>Hits</td>
@ -216,17 +216,17 @@ org.apache.hadoop.util.StringUtils;
<tr>
<td>Hits Caching</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getStats().getHitCachingCount()) %></td>
<td>Cache hit block requests but only requests set to use Block Cache</td>
<td>Cache hit block requests but only requests set to cache block if a miss</td>
</tr>
<tr>
<td>Misses</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getStats().getMissCount()) %></td>
<td>Number of requests that were cache misses</td>
<td>Block requests that were cache misses but set to cache missed blocks</td>
</tr>
<tr>
<td>Misses Caching</td>
<td><% String.format("%,d", cacheConfig.getBlockCache().getStats().getMissCount()) %></td>
<td>Block requests that were cache misses but only requests set to use Block Cache</td>
<td>Block requests that were cache misses but only requests set to use block cache</td>
</tr>
<tr>
<td>Hit Ratio</td>
@ -234,7 +234,7 @@ org.apache.hadoop.util.StringUtils;
<td>Hit Count divided by total requests count</td>
</tr>
</table>
<p>If Block Cache is made up of more than one cache -- i.e. a L1 and a L2 -- then the above
<p>If block cache is made up of more than one cache -- i.e. a L1 and a L2 -- then the above
are combined counts. Request count is sum of hits and misses.</p>
</%if>
</%def>
@ -292,7 +292,7 @@ are combined counts. Request count is sum of hits and misses.</p>
<tr>
<td>Implementation</td>
<td><a href="<% bcUrl %>"><% bc.getClass().getSimpleName() %></a></td>
<td>Class implementing this Block Cache Level</td>
<td>Class implementing this block cache Level</td>
</tr>
<%if bucketCache %>
<tr>
@ -371,8 +371,8 @@ are combined counts. Request count is sum of hits and misses.</p>
</tr>
</%if>
</table>
<%doc>Call through to Block Cache Detail rendering template</%doc>
<p>View Block Cache <a href="?format=json&bcn=<% name %>">as JSON</a> | Block Cache <a href="?format=json&bcn=<% name %>&bcv=file">as JSON by file</a></p>
<%doc>Call through to block cache Detail rendering template</%doc>
<p>View block cache <a href="?format=json&bcn=<% name %>">as JSON</a> | Block cache <a href="?format=json&bcn=<% name %>&bcv=file">as JSON by file</a></p>
<%if bucketCache %>
<p>BucketCache does not discern between DATA and META blocks so we do not show DATA counts (If deploy is using CombinedBlockCache, BucketCache is only DATA blocks</p>
<h3>BucketCache Buckets</h3>