yohengyangyang commented on issue #3741:
URL: https://github.com/apache/iceberg/issues/3741#issuecomment-995691825
@RussellSpitzer add some log
` private <T> Iterable<CloseableIterable<T>> entries(
BiFunction<ManifestFile, CloseableIterable<ManifestEntry<DataFile>>,
CloseableIterable<T>> entryFn) {
long start = System.currentTimeMillis();
// ……
Iterable<CloseableIterable<T>> res = Iterables.transform(
matchingManifests,
manifest -> {
long start2 = System.currentTimeMillis();
ManifestReader<DataFile> reader = ManifestFiles.read(manifest, io,
specsById)
.filterRows(dataFilter)
.filterPartitions(partitionFilter)
.caseSensitive(caseSensitive)
.select(columns);
CloseableIterable<ManifestEntry<DataFile>> entries =
reader.entries();
if (ignoreDeleted) {
entries = reader.liveEntries();
}
if (ignoreExisting) {
entries = CloseableIterable.filter(entries,
entry -> entry.status() != ManifestEntry.Status.EXISTING);
}
if (evaluator != null) {
entries = CloseableIterable.filter(entries,
entry -> evaluator.eval((GenericDataFile) entry.file()));
}
entries = CloseableIterable.filter(entries,
manifestEntryPredicate);
CloseableIterable<T> res2 = entryFn.apply(manifest, entries);
long end2 = System.currentTimeMillis();
LOG.info("transform_time: {}", end2 - start2);
return res2;
});
long end = System.currentTimeMillis();
LOG.info("entries_time: {}", end - start);
return res;
}`
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