oqgraph-dev team mailing list archive

[Andrew McDonnell <andrew@xxxxxxxxxxxxxxxxxxx>]

Hi Heinz

I'm going to take a punt and say that I missed this applying the fix for
MDEV-6282 in all cases

If you can manually apply the following patch and see if it fixes your problem?

HTH
--Andrew



diff --git a/storage/oqgraph/ha_oqgraph.cc b/storage/oqgraph/ha_oqgraph.cc
index 89bc912..b4cf03c 100644
--- a/storage/oqgraph/ha_oqgraph.cc
+++ b/storage/oqgraph/ha_oqgraph.cc
@@ -1099,6 +1099,10 @@ int ha_oqgraph::info(uint flag)

 int ha_oqgraph::extra(enum ha_extra_function operation)
 {
+  if (graph->get_thd() != current_thd) {
+    DBUG_PRINT( "oq-debug", ("rnd_pos g->table->in_use: 0x%lx <-- current_thd
0x%lx", (long) graph->get_thd(), (long) current_thd));
+    graph->set_thd(current_thd);
+  }
   return edges->file->extra(operation);
 }


On 16/11/15 19:17, Heinz Wiesinger wrote:
> Hey everyone,
> 
> We've been playing around a bit more with OQGraphv3 and when trying to put it 
> on one of our production setups we found it crashing in situations that didn't 
> happen on our testing setup. After a bit of back and forth I managed to 
> reproduce it pretty reliable and added info to 
> https://mariadb.atlassian.net/browse/MDEV-8206
> 
> From what I see it seems that the crash only happens when the graph is above a 
> certain size. But with our code, we'd hit that limit pretty easily.
> 
> Could someone maybe take a look at that please? :)
> 
> Grs,
> Heinz
> 
> 
>