aokolnychyi commented on code in PR #9251:
URL: https://github.com/apache/iceberg/pull/9251#discussion_r1427621708
##########
core/src/main/java/org/apache/iceberg/DeleteFileIndex.java:
##########
@@ -582,93 +513,187 @@ private
Iterable<CloseableIterable<ManifestEntry<DeleteFile>>> deleteManifestRea
}
}
- // a group of indexed delete files sorted by the sequence number they apply
to
- private static class DeleteFileGroup {
- private final long[] seqs;
- private final IndexedDeleteFile[] files;
-
- DeleteFileGroup(IndexedDeleteFile[] files) {
- this.seqs =
Arrays.stream(files).mapToLong(IndexedDeleteFile::applySequenceNumber).toArray();
- this.files = files;
+ private static int findStartIndex(long[] seqs, long seq) {
+ int pos = Arrays.binarySearch(seqs, seq);
+ int start;
+ if (pos < 0) {
+ // the sequence number was not found, where it would be inserted is
-(pos + 1)
+ start = -(pos + 1);
+ } else {
+ // the sequence number was found, but may not be the first
+ // find the first delete file with the given sequence number by
decrementing the position
+ start = pos;
+ while (start > 0 && seqs[start - 1] >= seq) {
+ start -= 1;
+ }
}
- DeleteFileGroup(long[] seqs, IndexedDeleteFile[] files) {
- this.seqs = seqs;
- this.files = files;
+ return start;
+ }
+
+ private static DeleteFile[] concat(DeleteFile[]... deletes) {
+ return ArrayUtil.concat(DeleteFile.class, deletes);
+ }
+
+ // a group of position delete files sorted by the sequence number they apply
to
+ private static class PositionDeletes {
+ private static final Comparator<DeleteFile> SEQ_COMPARATOR =
+ Comparator.comparingLong(DeleteFile::dataSequenceNumber);
+
+ private long[] seqs = null;
+ private DeleteFile[] files = null;
+ private volatile List<DeleteFile> buffer = Lists.newArrayList();
+
+ public void add(DeleteFile file) {
+ buffer.add(file);
}
public DeleteFile[] filter(long seq) {
- int start = findStartIndex(seq);
+ indexIfNeeded();
+
+ int start = findStartIndex(seqs, seq);
Review Comment:
You mean `filter` or `findStartIndex`? I have this section in
`findStartIndex` right now.
```
* <p>If the sequence number is present in the array, this method returns the
index of the first
* occurrence of the sequence number. If the sequence number is not present,
the method returns
* the index where the sequence number would be inserted while maintaining
the sorted order of the
* array. This returned index ranges from 0 (inclusive) to the length of the
array (inclusive).
```
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