handle a NPE in LookupCoordinatorManager.start() (apache#3026)

jackar · May 26, 2016 · e2653a8 · e2653a8
1 parent ebb6831
commit e2653a8
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/server/src/main/java/io/druid/server/lookup/cache/LookupCoordinatorManager.java b/server/src/main/java/io/druid/server/lookup/cache/LookupCoordinatorManager.java
@@ -551,6 +551,10 @@ public void run()
                 LOG.info("Not started. Returning");
                 return;
               }
+              if (allLookupTiers == null) {
+                LOG.info("Not updating lookups because no data exists");
+                return;
+              }
               for (final String tier : allLookupTiers.keySet()) {
                 try {
                   final Map<String, Map<String, Object>> allLookups = allLookupTiers.get(tier);