tomtongue commented on code in PR #16859:
URL: https://github.com/apache/iceberg/pull/16859#discussion_r4004531745
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core/src/main/java/org/apache/iceberg/MetadataLogEntriesTable.java:
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@@ -19,20 +19,43 @@
package org.apache.iceberg;
import java.util.List;
+import java.util.Map;
+import org.apache.iceberg.exceptions.NotFoundException;
import org.apache.iceberg.io.CloseableIterable;
+import org.apache.iceberg.io.FileIO;
import org.apache.iceberg.relocated.com.google.common.collect.Lists;
import org.apache.iceberg.types.Types;
import org.apache.iceberg.util.SnapshotUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+/**
+ * A {@link Table} implementation that exposes a table's metadata log as rows.
+ *
+ * <p>Each row represents a historical or current metadata file and includes
the snapshot details
+ * and table properties recorded in that file. The current metadata is
included as the latest row.
+ *
+ * <p>Queries that reference {@code properties} read each retained historical
metadata file. These
+ * additional reads are skipped when {@code properties} is not referenced, and
the already loaded
+ * current metadata is reused.
+ */
public class MetadataLogEntriesTable extends BaseMetadataTable {
+ private static final int PROPERTIES_FIELD_ID = 6;
Review Comment:
Thanks, I totally agree with this validation. I will add this to the next
commit.
And, thanks for pointing out the `LOG` location. Will correct the location.
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