ayushtkn commented on a change in pull request #2043:
URL: https://github.com/apache/hive/pull/2043#discussion_r626035170



##########
File path: common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
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@@ -668,6 +668,18 @@ private static void populateLlapDaemonVarsSet(Set<String> 
llapDaemonVarsSetLocal
         + " table or partition level. If hive.exec.parallel \n"
         + "is set to true then max worker threads created for copy can be 
hive.exec.parallel.thread.number(determines \n"
         + "number of copy tasks in parallel) * hive.repl.parallel.copy.tasks 
"),
+    
REPL_SNAPSHOT_DIFF_FOR_EXTERNAL_TABLE_COPY("hive.repl.externaltable.snapshotdiff.copy",
+        false,"Use snapshot diff for copying data from source to "
+        + "destination cluster for external table in distcp"),
+    
REPL_SNAPSHOT_OVERWRITE_TARGET_FOR_EXTERNAL_TABLE_COPY("hive.repl.externaltable.snapshot.overwrite.target",
+        true,"If this is enabled, in case the target is modified, when using 
snapshot for external table"
+        + "data copy, the target data is overwritten and the modifications are 
removed and the copy is again "
+        + "attempted using the snapshot based approach. If disabled, the 
replication will fail in case the target is "
+        + "modified."),
+    REPL_SNAPSHOT_EXTERNAL_TABLE_PATHS("hive.repl.externatable.snapshot.paths",

Review comment:
       Removed




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