From aa198b58456117bbe2f896b76240bf452b923f51 Mon Sep 17 00:00:00 2001
From: Tor Brede Vekterli <vekterli@verizonmedia.com>
Date: Tue, 16 Feb 2021 16:35:46 +0000
Subject: Log count of lost documents when all bucket replicas are gone

---
 storage/src/vespa/storage/distributor/bucketdbupdater.cpp | 7 +++++--
 storage/src/vespa/storage/distributor/bucketdbupdater.h   | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

(limited to 'storage')

diff --git a/storage/src/vespa/storage/distributor/bucketdbupdater.cpp b/storage/src/vespa/storage/distributor/bucketdbupdater.cpp
index a8c4e7c3544..ab2731e0845 100644
--- a/storage/src/vespa/storage/distributor/bucketdbupdater.cpp
+++ b/storage/src/vespa/storage/distributor/bucketdbupdater.cpp
@@ -902,6 +902,7 @@ BucketDBUpdater::MergingNodeRemover::MergingNodeRemover(
       _available_nodes(),
       _nonOwnedBuckets(),
       _removed_buckets(0),
+      _removed_documents(0),
       _localIndex(localIndex),
       _distribution(distribution),
       _upStates(upStates),
@@ -1026,6 +1027,7 @@ BucketDBUpdater::MergingNodeRemover::merge(storage::BucketDatabase::Merger& merg
 
     if (remainingCopies.empty()) {
         ++_removed_buckets;
+        _removed_documents += e->getHighestDocumentCount();
         return Result::Skip;
     } else {
         setCopiesInEntry(e, remainingCopies);
@@ -1043,9 +1045,10 @@ BucketDBUpdater::MergingNodeRemover::~MergingNodeRemover()
 {
     if (_removed_buckets != 0) {
         LOGBM(info, "After cluster state change %s, %zu buckets no longer "
-                    "have available replicas. Documents in these buckets will "
+                    "have available replicas. %zu documents in these buckets will "
                     "be unavailable until nodes come back up",
-                    _oldState.getTextualDifference(_state).c_str(), _removed_buckets);
+                    _oldState.getTextualDifference(_state).c_str(),
+                    _removed_buckets, _removed_documents);
     }
 }
 
diff --git a/storage/src/vespa/storage/distributor/bucketdbupdater.h b/storage/src/vespa/storage/distributor/bucketdbupdater.h
index 86bca224229..ccfee1e0c36 100644
--- a/storage/src/vespa/storage/distributor/bucketdbupdater.h
+++ b/storage/src/vespa/storage/distributor/bucketdbupdater.h
@@ -229,6 +229,7 @@ private:
         std::vector<bool> _available_nodes;
         std::vector<BucketDatabase::Entry> _nonOwnedBuckets;
         size_t _removed_buckets;
+        size_t _removed_documents;
 
         uint16_t _localIndex;
         const lib::Distribution& _distribution;
-- 
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