diff options
Diffstat (limited to 'sql/multi_range_read.cc')
| -rw-r--r-- | sql/multi_range_read.cc | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sql/multi_range_read.cc b/sql/multi_range_read.cc index d9aeff21400..bbc287bf239 100644 --- a/sql/multi_range_read.cc +++ b/sql/multi_range_read.cc @@ -426,6 +426,7 @@ bool Mrr_ordered_index_reader::set_interruption_temp_buffer(uint rowid_length, *space_start += key_len; have_saved_rowid= FALSE; + read_was_interrupted= FALSE; return FALSE; } @@ -434,6 +435,7 @@ void Mrr_ordered_index_reader::set_no_interruption_temp_buffer() support_scan_interruptions= FALSE; saved_key_tuple= saved_rowid= saved_primary_key= NULL; /* safety */ have_saved_rowid= FALSE; + read_was_interrupted= FALSE; } void Mrr_ordered_index_reader::interrupt_read() @@ -451,6 +453,7 @@ void Mrr_ordered_index_reader::interrupt_read() &table->key_info[table->s->primary_key], table->key_info[table->s->primary_key].key_length); } + read_was_interrupted= TRUE; /* Save the last rowid */ memcpy(saved_rowid, file->ref, file->ref_length); @@ -468,6 +471,10 @@ void Mrr_ordered_index_reader::position() void Mrr_ordered_index_reader::resume_read() { TABLE *table= file->get_table(); + + if (!read_was_interrupted) + return; + KEY *used_index= &table->key_info[file->active_index]; key_restore(table->record[0], saved_key_tuple, used_index, used_index->key_length); @@ -557,8 +564,7 @@ int Mrr_ordered_index_reader::init(handler *h_arg, RANGE_SEQ_IF *seq_funcs, is_mrr_assoc= !test(mode & HA_MRR_NO_ASSOCIATION); mrr_funcs= *seq_funcs; source_exhausted= FALSE; - if (support_scan_interruptions) - bzero(saved_key_tuple, key_info->key_length); + read_was_interrupted= false; have_saved_rowid= FALSE; return 0; } |