[hadoop] 01/01: add testSubtrees.

[szetszwo]

This is an automated email from the ASF dual-hosted git repository.

szetszwo pushed a commit to branch SnapshotDiffSubtrees
in repository https://gitbox.apache.org/repos/asf/hadoop.git

commit f7be6b6886c44cd724bd37ce4c728e78edd82d04
Author: Tsz-Wo Nicholas Sze <szets...@apache.org>
AuthorDate: Mon May 15 11:13:39 2023 +0800

    add testSubtrees.
---
 .../namenode/snapshot/TestSnapshotDiffReport.java  | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git 
a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDiffReport.java
 
b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDiffReport.java
index 1d50e50d426..a8724559bcc 100644
--- 
a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDiffReport.java
+++ 
b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotDiffReport.java
@@ -50,6 +50,8 @@ import 
org.apache.hadoop.hdfs.protocol.SnapshotDiffReport.DiffReportEntry;
 import org.apache.hadoop.hdfs.protocol.SnapshotDiffReport.DiffType;
 import org.apache.hadoop.hdfs.protocol.SnapshotDiffReportListing;
 import org.apache.hadoop.hdfs.protocol.SnapshotException;
+import org.apache.hadoop.hdfs.protocol.SnapshotStatus;
+import org.apache.hadoop.hdfs.protocol.SnapshottableDirectoryStatus;
 import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
 import org.apache.hadoop.hdfs.server.namenode.NameNode;
 import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter;
@@ -70,6 +72,10 @@ import org.slf4j.LoggerFactory;
 public class TestSnapshotDiffReport {
   private static final Logger LOG =
       LoggerFactory.getLogger(TestSnapshotDiffReport.class);
+
+  {
+    SnapshotTestHelper.disableLogs();
+  }
   private static final long SEED = 0;
   private static final short REPLICATION = 3;
   private static final short REPLICATION_1 = 2;
@@ -1603,4 +1609,31 @@ public class TestSnapshotDiffReport {
           + "supported for snapshotDiffReport between two snapshots"));
     }
   }
+
+  @Test
+  public void testSubtrees() throws Exception {
+    final Path root = new Path("/");
+    final Path foo = new Path(root, "foo");
+    final Path bar = new Path(foo, "bar");
+    hdfs.mkdirs(bar);
+    modifyAndCreateSnapshot(bar, new Path[]{root});
+
+    
cluster.getNamesystem().getFSDirectory().getRoot().dumpTreeRecursively(System.out);
+    for (SnapshottableDirectoryStatus s : hdfs.getSnapshottableDirListing()) {
+      LOG.info("Snapshottable {}: #snapshots={}", s.getFullPath(), 
s.getSnapshotNumber());
+    }
+    for (SnapshotStatus s : hdfs.getSnapshotListing(root)) {
+      LOG.info("Snapshot #{}: {}", s.getSnapshotID(), s.getFullPath());
+    }
+
+    diff(root, "s0", "s2");
+    diff(foo, "s0", "s2");
+    diff(bar, "s0", "s2");
+  }
+
+  void diff(Path path, String from, String to) throws Exception {
+    final SnapshotDiffReport diff = hdfs.getSnapshotDiffReport(path, from, to);
+    LOG.info("DIFF {} from {} to {}", path, from, to);
+    LOG.info("{}", diff);
+  }
 }


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