[systemds] branch master updated: [MINOR] Fix null value check in EncoderMVImpute

[arnabp20]

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arnabp20 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/systemds.git


The following commit(s) were added to refs/heads/master by this push:
     new 846d1e2  [MINOR] Fix null value check in EncoderMVImpute
846d1e2 is described below

commit 846d1e25156ddec7187be040fb8eb92f6ad7d8e1
Author: Lukas Erlbacher <lukas.erlbac...@student.tugraz.at>
AuthorDate: Tue Feb 23 19:10:53 2021 +0100

    [MINOR] Fix null value check in EncoderMVImpute
    
    Closes #1187.
---
 .../java/org/apache/sysds/runtime/transform/encode/EncoderMVImpute.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git 
a/src/main/java/org/apache/sysds/runtime/transform/encode/EncoderMVImpute.java 
b/src/main/java/org/apache/sysds/runtime/transform/encode/EncoderMVImpute.java
index 2391733..16377ba 100644
--- 
a/src/main/java/org/apache/sysds/runtime/transform/encode/EncoderMVImpute.java
+++ 
b/src/main/java/org/apache/sysds/runtime/transform/encode/EncoderMVImpute.java
@@ -178,7 +178,7 @@ public class EncoderMVImpute extends Encoder
                                                        _hist.get(colID) : new 
HashMap<>();
                                        for( int i=0; i<in.getNumRows(); i++ ) {
                                                String key = 
String.valueOf(in.get(i, colID-1));
-                                               if( key != null && 
!key.isEmpty() ) {
+                                               if(!key.equals("null") && 
!key.isEmpty() ) {
                                                        Long val = 
hist.get(key);
                                                        hist.put(key, 
(val!=null) ? val+1 : 1);
                                                }