msokolov commented on a change in pull request #563: Support for moving FST
offheap except PK
URL: https://github.com/apache/lucene-solr/pull/563#discussion_r255301101
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File path:
lucene/core/src/java/org/apache/lucene/codecs/blocktree/FieldReader.java
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@@ -86,9 +88,14 @@
if (indexIn != null) {
final IndexInput clone = indexIn.clone();
- //System.out.println("start=" + indexStartFP + " field=" +
fieldInfo.name);
clone.seek(indexStartFP);
- index = new FST<>(clone, ByteSequenceOutputs.getSingleton());
+ // Initialize FST offheap if index is MMapDirectory and
+ // docCount != sumDocFreq implying field is not primary key
+ if (clone instanceof ByteBufferIndexInput && this.docCount !=
this.sumDocFreq) {
+ index = new FST<>(clone, ByteSequenceOutputs.getSingleton(), new
OffHeapFSTStore());
+ } else {
+ index = new FST<>(clone, ByteSequenceOutputs.getSingleton());
Review comment:
Maybe add a print statement here and run the benchmarks to see whether the
primary key field is being detected correctly?
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