From f2cb5c61a509499a641938141195ed3e1083b972 Mon Sep 17 00:00:00 2001
From: Armin Braun <me@obrown.io>
Date: Tue, 1 Dec 2020 06:06:50 +0100
Subject: [PATCH] Fix NPE in ClusterInfoService

Store stats can be `null` if e.g. the shard was already closed
when the stats where retrieved. Don't record those shards in the
sizes map to fix an NPE in this case.
---
 .../org/elasticsearch/cluster/InternalClusterInfoService.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/server/src/main/java/org/elasticsearch/cluster/InternalClusterInfoService.java b/server/src/main/java/org/elasticsearch/cluster/InternalClusterInfoService.java
index 0d6f8e729d673..1991b37a6e0f1 100644
--- a/server/src/main/java/org/elasticsearch/cluster/InternalClusterInfoService.java
+++ b/server/src/main/java/org/elasticsearch/cluster/InternalClusterInfoService.java
@@ -331,6 +331,9 @@ static void buildShardLevelInfo(Logger logger, ShardStats[] stats, ImmutableOpen
             newShardRoutingToDataPath.put(shardRouting, s.getDataPath());
 
             final StoreStats storeStats = s.getStats().getStore();
+            if (storeStats == null) {
+                continue;
+            }
             final long size = storeStats.sizeInBytes();
             final long reserved = storeStats.getReservedSize().getBytes();