From 114fba9284778c4e5c81b031f8b73a81448435ec Mon Sep 17 00:00:00 2001
From: nichunen <nichunen@mininglamp.com>
Date: Mon, 15 Feb 2016 13:31:16 +0800
Subject: [PATCH] KYLIN-1419 NullPointerException occurs when query from
 subqueries with order by

---
 .../src/main/java/org/apache/kylin/query/relnode/OLAPSortRel.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/query/src/main/java/org/apache/kylin/query/relnode/OLAPSortRel.java b/query/src/main/java/org/apache/kylin/query/relnode/OLAPSortRel.java
index e8b7d17..477cfae 100644
--- a/query/src/main/java/org/apache/kylin/query/relnode/OLAPSortRel.java
+++ b/query/src/main/java/org/apache/kylin/query/relnode/OLAPSortRel.java
@@ -106,9 +106,11 @@ public class OLAPSortRel extends Sort implements OLAPRel {
     }
 
     private MeasureDesc findMeasure(TblColRef col) {
-        for (MeasureDesc measure : this.context.realization.getMeasures()) {
-            if (col.getName().equals(measure.getFunction().getRewriteFieldName())) {
-                return measure;
+        if(this.context.realization != null) {
+            for (MeasureDesc measure : this.context.realization.getMeasures()) {
+                if (col.getName().equals(measure.getFunction().getRewriteFieldName())) {
+                    return measure;
+                }
             }
         }
         return null;
-- 
2.4.9 (Apple Git-60)