SERVER-13777 migrated ranges waiting for deletion do not report cursors still open

(cherry picked from commit b36527b1863ed40e527bc80264075c8a09ad4a67)

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mongo/db/range_deleter.cpp b/src/mongo/db/range_deleter.cpp
index 82d5fcc0504..0ea7e44e4ec 100644
--- a/src/mongo/db/range_deleter.cpp
+++ b/src/mongo/db/range_deleter.cpp
@@ -237,6 +237,9 @@ namespace mongo {
                 _taskQueueNotEmptyCV.notify_one();
             }
             else {
+                log() << "rangeDeleter waiting for " << toDelete->cursorsToWait.size()
+                      << " cursors in " << ns << " to finish" << endl;
+
                 _notReadyQueue.push_back(toDelete.release());
             }
         }
@@ -279,6 +282,11 @@ namespace mongo {
 
         long long checkIntervalMillis = 5;
 
+        if (!cursorsToWait.empty()) {
+            log() << "rangeDeleter waiting for " << cursorsToWait.size()
+                  << " cursors in " << ns << " to finish" << endl;
+        }
+
         while (!cursorsToWait.empty()) {
             set<CursorId> cursorsNow;
             _env->getCursorIds(ns, &cursorsNow);