SERVER-12213: comments on index creation code

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mongo/db/index/index_access_method.h b/src/mongo/db/index/index_access_method.h
index 5b6227804aa..4f2c2e8650f 100644
--- a/src/mongo/db/index/index_access_method.h
+++ b/src/mongo/db/index/index_access_method.h
@@ -147,6 +147,12 @@ namespace mongo {
          * Starts a bulk operation.
          * You work on the returned IndexAccessMethod and then call commitBulk.
          * This can return NULL, meaning bulk mode is not available.
+         *
+         * Long term, you'll eventually be able to mix/match bulk, not bulk,
+         * have as many as you want, etc..
+         *
+         * For now (1/8/14) you can only do bulk when the index is empty
+         * it will fail if you try other times.
          */
         virtual IndexAccessMethod* initiateBulk() = 0;