[t:2357], do query backoff on pt queries

git-svn-id: file:///svn/mysql/tokudb-engine/tokudb-engine@17716 c7de825b-a66e-492c-adef-691d508d4ae1

storage/tokudb/ha_tokudb.cc

@@ -3955,6 +3955,7 @@ int ha_tokudb::read_full_row(uchar * buf) {
     //
     // assumes key is stored in this->last_key
     //
+    lockretry {
         error = share->file->getf_set(
             share->file, 
             transaction, 
@@ -3963,6 +3964,8 @@ int ha_tokudb::read_full_row(uchar * buf) {
             smart_dbt_callback_rowread_ptquery, 
             &info
             );
+        lockretry_wait;
+    }
     if (error) {
         table->status = STATUS_NOT_FOUND;
         TOKUDB_DBUG_RETURN(error == DB_NOTFOUND ? HA_ERR_CRASHED : error);
@@ -4487,7 +4490,11 @@ int ha_tokudb::rnd_pos(uchar * buf, uchar * pos) {
     info.buf = buf;
     info.keynr = primary_key;
 
+    lockretry {
         error = share->file->getf_set(share->file, transaction, 0, key, smart_dbt_callback_rowread_ptquery, &info);
+        lockretry_wait;
+    }
+
     if (error == DB_NOTFOUND) {
         error = HA_ERR_KEY_NOT_FOUND;
         goto cleanup;