ashutosh-bapat commented on a change in pull request #551: HIVE-21286: Hive
should support clean-up of previously bootstrapped tables when retry from
different dump.
URL: https://github.com/apache/hive/pull/551#discussion_r262125175
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplLoadTask.java
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@@ -279,6 +292,72 @@ a database ( directory )
return 0;
}
+ /**
+ * Cleanup/drop tables from the given database which are bootstrapped by
input dump dir.
+ * @throws HiveException Failed to drop the tables.
+ * @throws IOException File operations failure.
+ * @throws InvalidInputException Invalid input dump directory.
+ */
+ private void bootstrapRollbackTask() throws HiveException, IOException,
InvalidInputException {
+ Path bootstrapDirectory = new PathBuilder(work.bootstrapDumpToRollback)
+ .addDescendant(ReplUtils.INC_BOOTSTRAP_ROOT_DIR_NAME).build();
+ FileSystem fs = bootstrapDirectory.getFileSystem(conf);
+
+ if (!fs.exists(bootstrapDirectory)) {
+ throw new InvalidInputException("Input bootstrap dump directory to
rollback doesn't exist: "
+ + bootstrapDirectory);
Review comment:
Please add a test case covering this error i.e. when an invalid bootstrap
dump location is specified. If the specified bootstrap dump (to rollback)
location exists, how do we know that it is indeed the bootstrap dump location
for external tables and not some other dump location like a genuine incremental
dump or a genuine bootstrap dump? We should add testcases for the same as well.
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