[GitHub] [iceberg] szehon-ho commented on a diff in pull request #4142: [Core] Add utility to print an Iceberg table metadata

[GitBox <gi...@apache.org>]

szehon-ho commented on code in PR #4142:
URL: https://github.com/apache/iceberg/pull/4142#discussion_r922638506


##########
core/src/main/java/org/apache/iceberg/ReachableFileUtil.java:
##########
@@ -114,4 +119,54 @@ private static TableMetadata findFirstExistentPreviousMetadata(List<MetadataLogE
     }
     return manifestListLocations;
   }
+
+  /**
+   * Emits a human-readable metadata graph of the Iceberg table's current snapshot
+   * @param table Iceberg table
+   * @param out output stream to emit to
+   */
+  public static void printTable(Table table, PrintStream out) {
+    out.println("------------------------------------------------------------");
+    out.println("Table " + table.name());
+    out.println("------------------------------------------------------------");
+    printSnapshot(table, table.currentSnapshot(), out);
+  }
+
+  /**
+   * Emits a human-readable metadata graph of the given snapshot
+   * @param table Iceberg table
+   * @param snapshot Iceberg table snapshot
+   * @param out output print stream to emit to
+   */
+  public static void printSnapshot(Table table, Snapshot snapshot, PrintStream out) {
+    out.println(snapshot);
+    Iterator<ManifestFile> allManifests = snapshot.allManifests().iterator();
+    while (allManifests.hasNext()) {
+      ManifestFile mf = allManifests.next();
+      out.println(" \\---" + mf);
+
+      if (mf.content().equals(ManifestContent.DATA)) {

Review Comment:
   Done.



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