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when compression is enabled, use the compressed byte buffer to write it to the translog (less data to write), and handle recovery by being able to parse also compressed source

This commit is contained in:
kimchy 2010-12-24 01:09:15 +02:00
parent f2eae5b605
commit 49deb80d03
4 changed files with 23 additions and 14 deletions
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5
modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/SourceFieldMapper.java
View File

@ -39,11 +39,6 @@ public interface SourceFieldMapper extends FieldMapper<byte[]>, InternalMapper {
*/
boolean enabled();
/**
* Is the source field compressed or not?
*/
boolean compressed();
/**
* Returns the native source value, if its compressed, then the compressed value is returned.
*/

5
modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/xcontent/ParseContext.java
View File

@ -121,6 +121,11 @@ public class ParseContext {
return this.source;
}
// only should be used by SourceFieldMapper to update with a compressed source
public void source(byte[] source) {
this.source = source;
}
public ContentPath path() {
return this.path;
}

11
modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/xcontent/SourceFieldMapper.java
View File

@ -51,7 +51,7 @@ public class SourceFieldMapper extends AbstractFieldMapper<byte[]> implements or
private boolean enabled = Defaults.ENABLED;
private long compressThreshold = -1;
private long compressThreshold = Defaults.COMPRESS_THRESHOLD;
private Boolean compress = null;
@ -95,7 +95,7 @@ public class SourceFieldMapper extends AbstractFieldMapper<byte[]> implements or
super(new Names(name, name, name, name), Defaults.INDEX, Defaults.STORE, Defaults.TERM_VECTOR, Defaults.BOOST,
Defaults.OMIT_NORMS, Defaults.OMIT_TERM_FREQ_AND_POSITIONS, Lucene.KEYWORD_ANALYZER, Lucene.KEYWORD_ANALYZER);
this.enabled = enabled;
this.compress = compress;
this.compress = true;
this.compressThreshold = compressThreshold;
this.fieldSelector = new SourceFieldSelector(names.indexName());
}
@ -104,10 +104,6 @@ public class SourceFieldMapper extends AbstractFieldMapper<byte[]> implements or
return this.enabled;
}
@Override public boolean compressed() {
return compress != null && compress;
}
public FieldSelector fieldSelector() {
return this.fieldSelector;
}
@ -117,9 +113,10 @@ public class SourceFieldMapper extends AbstractFieldMapper<byte[]> implements or
return null;
}
byte[] data = context.source();
if (compress != null && compress) {
if (compress != null && compress && !LZFDecoder.isCompressed(data)) {
if (compressThreshold == -1 || data.length > compressThreshold) {
data = LZFEncoder.encodeWithCache(data, data.length);
context.source(data);
}
}
return new Field(names.indexName(), data, store);

14
modules/elasticsearch/src/main/java/org/elasticsearch/index/mapper/xcontent/XContentDocumentMapper.java
View File

@ -25,6 +25,10 @@ import org.apache.lucene.search.Filter;
import org.elasticsearch.common.Preconditions;
import org.elasticsearch.common.collect.ImmutableMap;
import org.elasticsearch.common.compress.CompressedString;
import org.elasticsearch.common.compress.lzf.LZFDecoder;
import org.elasticsearch.common.io.stream.BytesStreamInput;
import org.elasticsearch.common.io.stream.CachedStreamInput;
import org.elasticsearch.common.io.stream.LZFStreamInput;
import org.elasticsearch.common.lucene.search.TermFilter;
import org.elasticsearch.common.thread.ThreadLocals;
import org.elasticsearch.common.xcontent.*;
@ -374,7 +378,15 @@ public class XContentDocumentMapper implements DocumentMapper, ToXContent {
XContentParser parser = null;
try {
if (LZFDecoder.isCompressed(source.source())) {
BytesStreamInput siBytes = new BytesStreamInput(source.source());
LZFStreamInput siLzf = CachedStreamInput.cachedLzf(siBytes);
XContentType contentType = XContentFactory.xContentType(siLzf);
siLzf.resetToBufferStart();
parser = XContentFactory.xContent(contentType).createParser(siLzf);
} else {
parser = XContentFactory.xContent(source.source()).createParser(source.source());
}
context.reset(parser, new Document(), type, source.source(), listener);
// will result in START_OBJECT
@ -442,7 +454,7 @@ public class XContentDocumentMapper implements DocumentMapper, ToXContent {
}
}
ParsedDocument doc = new ParsedDocument(context.uid(), context.id(), context.type(), source.routing(), context.doc(), context.analyzer(),
source.source(), context.mappersAdded()).parent(source.parent());
context.source(), context.mappersAdded()).parent(source.parent());
// reset the context to free up memory
context.reset(null, null, null, null, null);
return doc;