szehon-ho commented on code in PR #6460:
URL: https://github.com/apache/iceberg/pull/6460#discussion_r1052809830
##########
core/src/main/java/org/apache/iceberg/AllManifestsTable.java:
##########
@@ -212,19 +200,22 @@ public CloseableIterable<StructLike> rows() {
return CloseableIterable.transform(rowIterable, projection::wrap);
} catch (IOException e) {
- throw new RuntimeIOException(
- e, "Cannot read manifest list file: %s",
manifestListTask.file().path());
+ throw new RuntimeIOException(e, "Cannot read manifest list file: %s",
manifestListLocation);
}
}
@Override
public DataFile file() {
- return manifestListTask.file();
+ return DataFiles.builder(PartitionSpec.unpartitioned())
Review Comment:
Optional: If this is called repeatedly maybe worth making this in the CTOR.
##########
core/src/main/java/org/apache/iceberg/AllManifestsTable.java:
##########
@@ -234,12 +225,14 @@ public long start() {
@Override
public long length() {
- return manifestListTask.length();
+ // return a generic length to avoid looking up the actual length
+ return 8192;
}
@Override
public Expression residual() {
- return manifestListTask.residual();
+ // this table is unpartitioned so the residual is always constant
+ return residual;
Review Comment:
Is this ever used? I wonder can we just return
ResidualEvaluator.unpartitioned(Expressions.alwaysFalse()) or something
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