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Use RandomAccessInput instead of seeking in Lucene90DocValuesProducer (#13894) 

We use manual seeking and reading instead of random access in this class.
That seems just unnecessarily complicated.
This commit is contained in:
Armin Braun 2024-10-12 10:31:51 +02:00 committed by GitHub
parent fa77d97c09
commit 48547f913c
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1 changed files with 8 additions and 13 deletions
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21
lucene/core/src/java/org/apache/lucene/codecs/lucene90/Lucene90DocValuesProducer.java
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@ -792,7 +792,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
return DocValues.emptyBinary();
}
final IndexInput bytesSlice = data.slice("fixed-binary", entry.dataOffset, entry.dataLength);
final RandomAccessInput bytesSlice = data.randomAccessSlice(entry.dataOffset, entry.dataLength);
// Prefetch the first page of data. Following pages are expected to get prefetched through
// read-ahead.
if (bytesSlice.length() > 0) {
@ -809,8 +809,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
@Override
public BytesRef binaryValue() throws IOException {
bytesSlice.seek((long) doc * length);
bytesSlice.readBytes(bytes.bytes, 0, length);
bytesSlice.readBytes((long) doc * length, bytes.bytes, 0, length);
return bytes;
}
};
@ -832,8 +831,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
public BytesRef binaryValue() throws IOException {
long startOffset = addresses.get(doc);
bytes.length = (int) (addresses.get(doc + 1L) - startOffset);
bytesSlice.seek(startOffset);
bytesSlice.readBytes(bytes.bytes, 0, bytes.length);
bytesSlice.readBytes(startOffset, bytes.bytes, 0, bytes.length);
return bytes;
}
};
@ -856,8 +854,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
@Override
public BytesRef binaryValue() throws IOException {
bytesSlice.seek((long) disi.index() * length);
bytesSlice.readBytes(bytes.bytes, 0, length);
bytesSlice.readBytes((long) disi.index() * length, bytes.bytes, 0, length);
return bytes;
}
};
@ -880,8 +877,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
final int index = disi.index();
long startOffset = addresses.get(index);
bytes.length = (int) (addresses.get(index + 1L) - startOffset);
bytesSlice.seek(startOffset);
bytesSlice.readBytes(bytes.bytes, 0, bytes.length);
bytesSlice.readBytes(startOffset, bytes.bytes, 0, bytes.length);
return bytes;
}
};
@ -1125,7 +1121,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
final IndexInput bytes;
final long blockMask;
final LongValues indexAddresses;
final IndexInput indexBytes;
final RandomAccessInput indexBytes;
final BytesRef term;
long ord = -1;
@ -1147,7 +1143,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
indexAddresses =
DirectMonotonicReader.getInstance(
entry.termsIndexAddressesMeta, indexAddressesSlice, merging);
indexBytes = data.slice("terms-index", entry.termsIndexOffset, entry.termsIndexLength);
indexBytes = data.randomAccessSlice(entry.termsIndexOffset, entry.termsIndexLength);
term = new BytesRef(entry.maxTermLength);
// add the max term length for the dictionary
@ -1205,8 +1201,7 @@ final class Lucene90DocValuesProducer extends DocValuesProducer {
assert index >= 0 && index <= (entry.termsDictSize - 1) >>> entry.termsDictIndexShift;
final long start = indexAddresses.get(index);
term.length = (int) (indexAddresses.get(index + 1) - start);
indexBytes.seek(start);
indexBytes.readBytes(term.bytes, 0, term.length);
indexBytes.readBytes(start, term.bytes, 0, term.length);
return term;
}