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SOLR-5237: add lucene index heap usage to luke request handler 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1523442 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2013-09-15 15:32:08 +00:00
parent 9b53565331
commit 67358330e1
2 changed files with 26 additions and 0 deletions
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10
solr/CHANGES.txt
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@ -62,6 +62,16 @@ Velocity 1.7 and Velocity Tools 2.0
Apache UIMA 2.3.1
Apache ZooKeeper 3.4.5
Detailed Change List
----------------------
Other Changes
----------------------
* SOLR-5237: Add indexHeapUsageBytes to LukeRequestHandler, indicating how much
heap memory is being used by the underlying Lucene index structures.
(Areek Zillur via Robert Muir)
================== 4.5.0 ==================
Versions of Major Components

16
solr/core/src/java/org/apache/solr/handler/admin/LukeRequestHandler.java
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@ -555,6 +555,7 @@ public class LukeRequestHandler extends RequestHandlerBase
indexInfo.add("numDocs", reader.numDocs());
indexInfo.add("maxDoc", reader.maxDoc());
indexInfo.add("deletedDocs", reader.maxDoc() - reader.numDocs());
indexInfo.add("indexHeapUsageBytes", getIndexHeapUsed(reader));
indexInfo.add("version", reader.getVersion()); // TODO? Is this different then: IndexReader.getCurrentVersion( dir )?
indexInfo.add("segmentCount", reader.leaves().size());
@ -569,6 +570,21 @@ public class LukeRequestHandler extends RequestHandlerBase
return indexInfo;
}
/** Returns the sum of RAM bytes used by each segment */
private static long getIndexHeapUsed(DirectoryReader reader) {
long indexHeapRamBytesUsed = 0;
for(AtomicReaderContext atomicReaderContext : reader.leaves()) {
AtomicReader atomicReader = atomicReaderContext.reader();
if (atomicReader instanceof SegmentReader) {
indexHeapRamBytesUsed += ((SegmentReader) atomicReader).ramBytesUsed();
} else {
// Not supported for any reader that is not a SegmentReader
return -1;
}
}
return indexHeapRamBytesUsed;
}
// Get terribly detailed information about a particular field. This is a very expensive call, use it with caution
// especially on large indexes!
@SuppressWarnings("unchecked")