singer-bin commented on a change in pull request #3926:
URL: https://github.com/apache/hadoop/pull/3926#discussion_r798388664
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File path:
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/offlineImageViewer/TestOfflineImageViewer.java
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@@ -1174,6 +1174,42 @@ public void testReverseXmlWrongLayoutVersion() throws
Throwable {
}
}
+ /**
+ * Tests that the ReverseXML processor doesn't accept XML files without the
SnapshotDiffSection.
+ */
+ @Test
+ public void testReverseXmlWithoutSnapshotDiffSection() throws Throwable {
+ File imageWSDS = new File(tempDir, "imageWithoutSnapshotDiffSection.xml");
+ PrintWriter writer = new PrintWriter(imageWSDS, "UTF-8");
+ try {
+ writer.println("<?xml version=\"1.0\"?>");
+ writer.println("<fsimage>");
+ writer.println("<version>");
+ writer.println("<layoutVersion>-67</layoutVersion>");
+ writer.println("<onDiskVersion>1</onDiskVersion>");
+
writer.println("<oivRevision>545bbef596c06af1c3c8dca1ce29096a64608478</oivRevision>");
+ writer.println("</version>");
+
writer.println("<FileUnderConstructionSection></FileUnderConstructionSection>");
+ writer.println("<ErasureCodingSection></ErasureCodingSection>");
+
writer.println("<INodeSection><lastInodeId>91488</lastInodeId><numInodes>0</numInodes></INodeSection>");
+
writer.println("<SecretManagerSection><currentId>90</currentId><tokenSequenceNumber>35</tokenSequenceNumber><numDelegationKeys>0</numDelegationKeys><numTokens>0</numTokens></SecretManagerSection>");
+ writer.println("<INodeReferenceSection></INodeReferenceSection>");
+
writer.println("<SnapshotSection><snapshotCounter>0</snapshotCounter><numSnapshots>0</numSnapshots></SnapshotSection>");
+
writer.println("<NameSection><namespaceId>326384987</namespaceId></NameSection>");
+
writer.println("<CacheManagerSection><nextDirectiveId>1</nextDirectiveId><numPools>0</numPools><numDirectives>0</numDirectives></CacheManagerSection>");
+ writer.println("<INodeDirectorySection></INodeDirectorySection>");
+ writer.println("</fsimage>");
+ } finally {
+ writer.close();
+ }
+ try {
+ OfflineImageReconstructor.run(imageWSDS.getAbsolutePath(),
Review comment:
That's it, here is the fsimage that simulates the production cluster to
generate an xml file without the SnapshotDiffSection tag, and an error occurs
when the xml needs to be converted back to fsimage.So expect an exception to be
thrown.
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