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LUCENE-5969: improve memory pf 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene5969@1629405 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Muir 2014-10-04 15:29:00 +00:00
parent 1b075c0ee8
commit 3bc0d0b151
1 changed files with 22 additions and 17 deletions
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21
lucene/codecs/src/java/org/apache/lucene/codecs/memory/MemoryPostingsFormat.java
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@ -29,6 +29,7 @@ import org.apache.lucene.codecs.FieldsConsumer;
import org.apache.lucene.codecs.FieldsProducer;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.TermStats;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.DocsAndPositionsEnum;
import org.apache.lucene.index.DocsEnum;
import org.apache.lucene.index.FieldInfo;
@ -53,7 +54,6 @@ import org.apache.lucene.util.Bits;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.FixedBitSet;
import org.apache.lucene.util.IOUtils;
import org.apache.lucene.util.IntsRef;
import org.apache.lucene.util.IntsRefBuilder;
import org.apache.lucene.util.RamUsageEstimator;
import org.apache.lucene.util.fst.Builder;
@ -276,7 +276,7 @@ public final class MemoryPostingsFormat extends PostingsFormat {
private static String EXTENSION = "ram";
private static final String CODEC_NAME = "MemoryPostings";
private static final int VERSION_START = 0;
private static final int VERSION_START = 1;
private static final int VERSION_CURRENT = VERSION_START;
private class MemoryFieldsConsumer extends FieldsConsumer {
@ -288,7 +288,7 @@ public final class MemoryPostingsFormat extends PostingsFormat {
out = state.directory.createOutput(fileName, state.context);
boolean success = false;
try {
CodecUtil.writeHeader(out, CODEC_NAME, VERSION_CURRENT);
CodecUtil.writeSegmentHeader(out, CODEC_NAME, VERSION_CURRENT, state.segmentInfo.getId(), state.segmentSuffix);
success = true;
} finally {
if (!success) {
@ -894,7 +894,9 @@ public final class MemoryPostingsFormat extends PostingsFormat {
this.termCount = termCount;
final int fieldNumber = in.readVInt();
field = fieldInfos.fieldInfo(fieldNumber);
if (field.getIndexOptions() != IndexOptions.DOCS_ONLY) {
if (field == null) {
throw new CorruptIndexException("invalid field number: " + fieldNumber, in);
} else if (field.getIndexOptions() != IndexOptions.DOCS_ONLY) {
sumTotalTermFreq = in.readVLong();
} else {
sumTotalTermFreq = -1;
@ -973,12 +975,13 @@ public final class MemoryPostingsFormat extends PostingsFormat {
@Override
public FieldsProducer fieldsProducer(SegmentReadState state) throws IOException {
final String fileName = IndexFileNames.segmentFileName(state.segmentInfo.name, state.segmentSuffix, EXTENSION);
final ChecksumIndexInput in = state.directory.openChecksumInput(fileName, IOContext.READONCE);
final SortedMap<String,TermsReader> fields = new TreeMap<>();
try (ChecksumIndexInput in = state.directory.openChecksumInput(fileName, IOContext.READONCE)) {
Throwable priorE = null;
try {
CodecUtil.checkHeader(in, CODEC_NAME, VERSION_START, VERSION_CURRENT);
CodecUtil.checkSegmentHeader(in, CODEC_NAME, VERSION_START, VERSION_CURRENT, state.segmentInfo.getId(), state.segmentSuffix);
while(true) {
final int termCount = in.readVInt();
if (termCount == 0) {
@ -988,9 +991,11 @@ public final class MemoryPostingsFormat extends PostingsFormat {
// System.out.println("load field=" + termsReader.field.name);
fields.put(termsReader.field.name, termsReader);
}
CodecUtil.checkFooter(in);
} catch (Throwable exception) {
priorE = exception;
} finally {
in.close();
CodecUtil.checkFooter(in, priorE);
}
}
return new FieldsProducer() {