avijayanhwx commented on a change in pull request #982:
URL: https://github.com/apache/hadoop-ozone/pull/982#discussion_r433479809
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File path:
hadoop-hdds/framework/src/test/java/org/apache/hadoop/hdds/utils/db/TestRDBStore.java
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@@ -348,5 +348,40 @@ public void testGetDBUpdatesSince() throws Exception {
}
}
+ @Test
+ public void testDowngrade() throws Exception {
+
+ // Write data to current DB which has 6 column families at the time of
+ // writing this test.
+ for (String family : families) {
+ try (Table table = rdbStore.getTable(family)) {
+ byte[] key = family.getBytes(StandardCharsets.UTF_8);
+ byte[] value =
+ RandomStringUtils.random(10).getBytes(StandardCharsets.UTF_8);
+ table.put(key, value);
+ }
+ }
+ // Close current DB.
+ rdbStore.close();
+
+ // Reopen DB with the last column family removed.
+ options = new DBOptions();
+ options.setCreateIfMissing(true);
+ options.setCreateMissingColumnFamilies(true);
+ configSet = new HashSet<>();
+ List<String> familiesMinusOne = families.subList(0, families.size() - 1);
+ for(String name : familiesMinusOne) {
+ TableConfig newConfig = new TableConfig(name, new ColumnFamilyOptions());
+ configSet.add(newConfig);
+ }
+ rdbStore = new RDBStore(rdbStore.getDbLocation(), options, configSet);
+ for (String family : familiesMinusOne) {
Review comment:
Added check for the extra column family.
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