From 664405fb418e4e985b6ed9df9f1e7393a97b4aba Mon Sep 17 00:00:00 2001
From: Matthew Davis <matt.davis@ascend-tech.us>
Date: Fri, 10 Dec 2021 07:59:46 -0500
Subject: [PATCH] handle npe for facets

---
 .../src/main/java/io/zulia/server/index/ShardReader.java      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/zulia-server/src/main/java/io/zulia/server/index/ShardReader.java b/zulia-server/src/main/java/io/zulia/server/index/ShardReader.java
index 4e7c8bd8..50e79039 100644
--- a/zulia-server/src/main/java/io/zulia/server/index/ShardReader.java
+++ b/zulia-server/src/main/java/io/zulia/server/index/ShardReader.java
@@ -305,7 +305,9 @@ else if (statRequest.getShardFacets() == 0) {
 				if (indexConfig.isHierarchicalFacet(label)) {
 					List<ZuliaQuery.FacetStats> topChildren = facets.getTopChildren(statRequest.getNumericField(), numOfFacets, label,
 							statRequest.getFacetField().getPathList().toArray(new String[0]));
-					statGroupBuilder.addAllFacetStats(topChildren);
+					if (topChildren != null) {
+						statGroupBuilder.addAllFacetStats(topChildren);
+					}
 				}
 				else {
 					List<ZuliaQuery.FacetStats> topChildren = facets.getTopChildren(statRequest.getNumericField(), numOfFacets, label,