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Only load FST off heap if we are actually using mmaps for the term dictionary #43158

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merged 2 commits into from
Jun 13, 2019
Merged

Only load FST off heap if we are actually using mmaps for the term dictionary #43158

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981a876
Only load FST off heap if we are actually using mmaps for the term di…
s1monw Jun 12, 2019
db36946
Merge branch 'master' into only_offheap_on_mmap
s1monw Jun 12, 2019
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4 changes: 2 additions & 2 deletions server/src/main/java/org/elasticsearch/index/engine/ReadOnlyEngine.java
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Original file line number Diff line number Diff line change
Expand Up @@ -67,10 +67,10 @@ public class ReadOnlyEngine extends Engine {

/**
* Reader attributes used for read only engines. These attributes prevent loading term dictionaries on-heap even if the field is an
* ID field.
* ID field if we are reading form memory maps.
*/
public static final Map<String, String> OFF_HEAP_READER_ATTRIBUTES = Collections.singletonMap(BlockTreeTermsReader.FST_MODE_KEY,
BlockTreeTermsReader.FSTLoadMode.OFF_HEAP.name());
BlockTreeTermsReader.FSTLoadMode.AUTO.name());
private final SegmentInfos lastCommittedSegmentInfos;
private final SeqNoStats seqNoStats;
private final TranslogStats translogStats;
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4 changes: 2 additions & 2 deletions x-pack/plugin/core/src/main/java/org/elasticsearch/snapshots/SourceOnlySnapshot.java
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Expand Up @@ -6,6 +6,7 @@
package org.elasticsearch.snapshots;

import org.apache.lucene.codecs.Codec;
import org.apache.lucene.codecs.blocktree.BlockTreeTermsReader;
import org.apache.lucene.index.CheckIndex;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.DocValuesType;
Expand Down Expand Up @@ -38,7 +39,6 @@
import org.apache.lucene.util.FixedBitSet;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.core.internal.io.IOUtils;
import org.elasticsearch.index.engine.ReadOnlyEngine;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
Expand Down Expand Up @@ -82,7 +82,7 @@ public synchronized List<String> syncSnapshot(IndexCommit commit) throws IOExcep
String segmentFileName;
try (Lock writeLock = targetDirectory.obtainLock(IndexWriter.WRITE_LOCK_NAME);
StandardDirectoryReader reader = (StandardDirectoryReader) DirectoryReader.open(commit,
ReadOnlyEngine.OFF_HEAP_READER_ATTRIBUTES)) {
Collections.singletonMap(BlockTreeTermsReader.FST_MODE_KEY, BlockTreeTermsReader.FSTLoadMode.OFF_HEAP.name()))) {
SegmentInfos segmentInfos = reader.getSegmentInfos().clone();
DirectoryReader wrappedReader = wrapReader(reader);
List<SegmentCommitInfo> newInfos = new ArrayList<>();
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5 changes: 4 additions & 1 deletion ...k/plugin/core/src/main/java/org/elasticsearch/snapshots/SourceOnlySnapshotRepository.java
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Expand Up @@ -6,6 +6,7 @@
package org.elasticsearch.snapshots;

import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
import org.apache.lucene.codecs.blocktree.BlockTreeTermsReader;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexCommit;
import org.apache.lucene.index.SegmentInfos;
Expand Down Expand Up @@ -37,6 +38,7 @@
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Path;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.function.Function;
Expand Down Expand Up @@ -135,7 +137,8 @@ protected void closeInternal() {
final long maxDoc = segmentInfos.totalMaxDoc();
tempStore.bootstrapNewHistory(maxDoc, maxDoc);
store.incRef();
try (DirectoryReader reader = DirectoryReader.open(tempStore.directory(), ReadOnlyEngine.OFF_HEAP_READER_ATTRIBUTES)) {
try (DirectoryReader reader = DirectoryReader.open(tempStore.directory(),
Collections.singletonMap(BlockTreeTermsReader.FST_MODE_KEY, BlockTreeTermsReader.FSTLoadMode.OFF_HEAP.name()))) {
IndexCommit indexCommit = reader.getIndexCommit();
super.snapshotShard(tempStore, mapperService, snapshotId, indexId, indexCommit, snapshotStatus);
} finally {
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