From e26364f8c3b63ab19c6969eaceedf350f0a9327d Mon Sep 17 00:00:00 2001
From: Arne Juul <arnej@yahoo-inc.com>
Date: Wed, 20 Dec 2017 15:26:51 +0000
Subject: guard against empty set of nodes

---
 storage/src/vespa/storage/distributor/distributorcomponent.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'storage')

diff --git a/storage/src/vespa/storage/distributor/distributorcomponent.cpp b/storage/src/vespa/storage/distributor/distributorcomponent.cpp
index f0643eec37e..ac6a2957052 100644
--- a/storage/src/vespa/storage/distributor/distributorcomponent.cpp
+++ b/storage/src/vespa/storage/distributor/distributorcomponent.cpp
@@ -281,6 +281,11 @@ DistributorComponent::updateBucketDatabase(
     if (updateFlags & DatabaseUpdate::RESET_TRUSTED) {
         dbentry->resetTrusted();
     }
+    if (dbentry->getNodeCount() == 0) {
+        LOG(warning, "all nodes in changedNodes set (size %zu) are down, removing dbentry", changedNodes.size());
+        bucketSpace.getBucketDatabase().remove(bucket.getBucketId());
+        return;
+    }
     bucketSpace.getBucketDatabase().update(dbentry);
 }
 
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