WT-2361: column-store starting record number error

Insert splits happen concurrently with checkpoints, and checkpoints can
skip the page being split based on its first-dirty transaction value,
but not skip the newly created split page, which corrupts the
checkpoint. Don't let that happen, set the first-dirty transaction value
before splitting.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/btree/bt_split.c b/src/btree/bt_split.c
index 68d3cc91eb3..e036d6e3334 100644
--- a/src/btree/bt_split.c
+++ b/src/btree/bt_split.c
@@ -1944,6 +1944,15 @@ __split_insert(WT_SESSION_IMPL *session, WT_REF *ref)
 	__wt_cache_page_inmem_incr(session, right, right_incr);
 
 	/*
+	 * We perform insert splits concurrently with checkpoints, where the
+	 * requirement is a checkpoint must include either the original page
+	 * or both new pages. The page we're splitting is dirty, but that's
+	 * insufficient: set the first dirty transaction to an impossibly old
+	 * value so this page is not skipped by a checkpoint.
+	 */
+	page->modify->first_dirty_txn = WT_TXN_FIRST;
+
+	/*
 	 * The act of splitting into the parent releases the pages for eviction;
 	 * ensure the page contents are consistent.
 	 */