From 8055a7b3c23b9ea6faf78ca99c66dc08eb2939b4 Mon Sep 17 00:00:00 2001 From: sunny <Unknown> Date: Mon, 5 Mar 2007 00:37:57 +0000 Subject: [PATCH] Fix for Bug# 21409. At low transaction isolation levels we let each consistent read set its own snapshot --- handler/ha_innodb.cc | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/handler/ha_innodb.cc b/handler/ha_innodb.cc index 7ea6ecaeb7..cdcf75bc17 100644 --- a/handler/ha_innodb.cc +++ b/handler/ha_innodb.cc @@ -6856,6 +6856,16 @@ ha_innobase::store_lock( trx->isolation_level = innobase_map_isolation_level( (enum_tx_isolation) thd->variables.tx_isolation); + + if (trx->isolation_level <= TRX_ISO_READ_COMMITTED + && trx->global_read_view) { + + /* At low transaction isolation levels we let + each consistent read set its own snapshot */ + + read_view_close_for_mysql(trx); + } + } const bool in_lock_tables = thd_in_lock_tables(thd); -- 2.30.9