WT-3244 Turn off in-memory cache-full checks on the metadata file (#3359)

This avoids metadata operations failing in in-memory configurations.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/btree/bt_handle.c b/src/btree/bt_handle.c
index f2bffee06da..57e0a3422f2 100644
--- a/src/btree/bt_handle.c
+++ b/src/btree/bt_handle.c
@@ -359,6 +359,14 @@ __btree_conf(WT_SESSION_IMPL *session, WT_CKPT *ckpt)
 	} else
 		F_CLR(btree, WT_BTREE_IGNORE_CACHE);
 
+	/*
+	 * The metadata isn't blocked by in-memory cache limits because metadata
+	 * "unroll" is performed by updates that are potentially blocked by the
+	 * cache-full checks.
+	 */
+	if (WT_IS_METADATA(btree->dhandle))
+		F_SET(btree, WT_BTREE_IGNORE_CACHE);
+
 	WT_RET(__wt_config_gets(session, cfg, "log.enabled", &cval));
 	if (cval.val)
 		F_CLR(btree, WT_BTREE_NO_LOGGING);