szehon-ho commented on code in PR #4566:
URL: https://github.com/apache/iceberg/pull/4566#discussion_r855665894
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core/src/main/java/org/apache/iceberg/BaseAllMetadataTableScan.java:
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@@ -19,40 +19,56 @@
package org.apache.iceberg;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import org.apache.iceberg.events.Listeners;
+import org.apache.iceberg.events.ScanEvent;
import org.apache.iceberg.io.CloseableIterable;
+import org.apache.iceberg.relocated.com.google.common.base.Function;
+import org.apache.iceberg.relocated.com.google.common.collect.Iterables;
+import org.apache.iceberg.relocated.com.google.common.collect.Sets;
+import org.apache.iceberg.util.ParallelIterable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
abstract class BaseAllMetadataTableScan extends BaseMetadataTableScan {
+ private static final Logger LOG =
LoggerFactory.getLogger(BaseAllMetadataTableScan.class);
- BaseAllMetadataTableScan(TableOperations ops, Table table, Schema
fileSchema) {
- super(ops, table, fileSchema);
+ BaseAllMetadataTableScan(TableOperations ops, Table table, Schema schema,
MetadataTableType tableType) {
+ super(ops, table, schema, tableType);
}
- BaseAllMetadataTableScan(TableOperations ops, Table table, Schema schema,
TableScanContext context) {
- super(ops, table, schema, context);
+ BaseAllMetadataTableScan(TableOperations ops, Table table, Schema schema,
MetadataTableType tableType,
+ TableScanContext context) {
+ super(ops, table, schema, tableType, context);
}
- /**
- * Type of scan being performed, such as {@link
MetadataTableType#ALL_DATA_FILES} when scanning
- * a table's {@link org.apache.iceberg.AllDataFilesTable}.
- * <p>
- * Used for logging and error messages.
- */
- protected abstract String tableType();
-
@Override
- public TableScan appendsBetween(long fromSnapshotId, long toSnapshotId) {
- throw new UnsupportedOperationException(
- String.format("Cannot incrementally scan table of type %s",
tableType()));
+ public TableScan useSnapshot(long scanSnapshotId) {
+ throw new UnsupportedOperationException("Cannot select snapshot in table:
" + tableType());
}
@Override
- public TableScan appendsAfter(long fromSnapshotId) {
- throw new UnsupportedOperationException(
- String.format("Cannot incrementally scan table of type %s",
tableType()));
+ public TableScan asOfTime(long timestampMillis) {
+ throw new UnsupportedOperationException("Cannot select snapshot in table:
" + tableType());
}
@Override
public CloseableIterable<FileScanTask> planFiles() {
- return super.planFilesAllSnapshots();
+ LOG.info("Scanning metadata table {} with filter {}.", table(), filter());
+ Listeners.notifyAll(new ScanEvent(table().name(), 0L, filter(), schema()));
+
+ return doPlanFiles();
+ }
+
+ protected CloseableIterable<ManifestFile>
reachableManifests(Function<Snapshot, Iterable<ManifestFile>> toManifests) {
Review Comment:
That's a good name.
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