aasha commented on a change in pull request #1120:
URL: https://github.com/apache/hive/pull/1120#discussion_r444723985



##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosExternalTables.java
##########
@@ -517,7 +508,7 @@ public void externalTableIncrementalReplication() throws 
Throwable {
             + "'")
         .run("alter table t1 add partition(country='india')")
         .run("alter table t1 add partition(country='us')")
-        .dump(primaryDbName, withClause);

Review comment:
       why is the withclause removed from here?

##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/BaseReplicationAcrossInstances.java
##########
@@ -103,6 +114,12 @@ public static void classLevelTearDown() throws IOException 
{
     replica.close();
   }
 
+  private static void setReplicaExternalBase(FileSystem fs, Map<String, 
String> confMap) throws IOException {
+    fs.mkdirs(REPLICA_EXTERNAL_BASE);
+    fullyQualifiedReplicaExternalBase =  
fs.getFileStatus(REPLICA_EXTERNAL_BASE).getPath().toString();
+    confMap.put(HiveConf.ConfVars.REPL_EXTERNAL_TABLE_BASE_DIR.varname, 
fullyQualifiedReplicaExternalBase);

Review comment:
       this is set at 104 line also

##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/ReplicationTestUtils.java
##########
@@ -502,19 +502,11 @@ public static void insertForMerge(WarehouseInstance 
primary, String primaryDbNam
                 "creation", "creation", "merge_update", "merge_insert", 
"merge_insert"});
   }
 
-  public static List<String> externalTableBasePathWithClause(String 
replExternalBase, WarehouseInstance replica)
-          throws IOException, SemanticException {
-    Path externalTableLocation = new Path(replExternalBase);
-    DistributedFileSystem fileSystem = replica.miniDFSCluster.getFileSystem();
-    externalTableLocation = 
PathBuilder.fullyQualifiedHDFSUri(externalTableLocation, fileSystem);
-    fileSystem.mkdirs(externalTableLocation);
-
-    // this is required since the same filesystem is used in both source and 
target
-    return Arrays.asList(
-            "'" + HiveConf.ConfVars.REPL_EXTERNAL_TABLE_BASE_DIR.varname + 
"'='"
-                    + externalTableLocation.toString() + "'",
-            "'distcp.options.pugpb'=''"
-    );
+  public static List<String> externalTableClause(boolean enable) {

Review comment:
       should this be include external table clause

##########
File path: 
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplExternalTables.java
##########
@@ -66,6 +67,9 @@ private ReplExternalTables(){}
 
   public static String externalTableLocation(HiveConf hiveConf, String 
location) throws SemanticException {
     String baseDir = 
hiveConf.get(HiveConf.ConfVars.REPL_EXTERNAL_TABLE_BASE_DIR.varname);
+    if (StringUtils.isEmpty(baseDir)) {

Review comment:
       At the time of load the REPL_EXTERNAL_TABLE_BASE_DIR fully qualified 
path is not needed?

##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosExternalTables.java
##########
@@ -503,8 +495,7 @@ public void externalTableIncrementalCheckpointing() throws 
Throwable {
 
   @Test
   public void externalTableIncrementalReplication() throws Throwable {
-    List<String> withClause = externalTableBasePathWithClause();
-    WarehouseInstance.Tuple tuple = primary.dump(primaryDbName, withClause);
+    WarehouseInstance.Tuple tuple = primary.dump(primaryDbName);

Review comment:
       with clause removed?

##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosExternalTables.java
##########
@@ -159,14 +154,14 @@ public void externalTableReplicationWithDefaultPaths() 
throws Throwable {
         .run("insert into table t2 partition(country='india') values 
('bangalore')")
         .run("insert into table t2 partition(country='us') values ('austin')")
         .run("insert into table t2 partition(country='france') values 
('paris')")
-        .dump(primaryDbName, withClauseOptions);
+        .dump(primaryDbName);

Review comment:
       why is the with clause removed?

##########
File path: 
itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenariosExternalTables.java
##########
@@ -623,7 +612,7 @@ public void bootstrapExternalTablesDuringIncrementalPhase() 
throws Throwable {
     assertFalse(primary.miniDFSCluster.getFileSystem()
             .exists(new Path(metadataPath + relativeExtInfoPath(null))));
 
-    replica.load(replicatedDbName, primaryDbName, loadWithClause)
+    replica.load(replicatedDbName, primaryDbName)

Review comment:
       with clause removed?

##########
File path: ql/src/java/org/apache/hadoop/hive/ql/exec/repl/ReplDumpTask.java
##########
@@ -750,10 +752,19 @@ private void dumpTableListToDumpLocation(List<String> 
tableList, Path dbRoot, St
 
   private List<DirCopyWork> dirLocationsToCopy(List<Path> sourceLocations)
           throws HiveException {
+    if (sourceLocations.isEmpty()) {
+      return Collections.emptyList();
+    }
     List<DirCopyWork> list = new ArrayList<>(sourceLocations.size());
     String baseDir = 
conf.get(HiveConf.ConfVars.REPL_EXTERNAL_TABLE_BASE_DIR.varname);
     // this is done to remove any scheme related information that will be 
present in the base path
     // specifically when we are replicating to cloud storage
+    URI basePathUri  = StringUtils.isEmpty(baseDir) ? null : new 
Path(baseDir).toUri();
+    if (basePathUri == null || basePathUri.getScheme() == null || 
basePathUri.getAuthority() == null) {

Review comment:
       Can be moved to a method




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