I am running a local questDB instance on my macbook and when

Question

I am running a local questDB instance on my macbook and when I am on the web console and triggering a query which takes around 50ms multiple times over a short time span QuestDB will crash with the following error ```java 12769 0x16d35f000 malloc Double free of object 0x12b11ca60 java 12769 0x16d35f000 malloc set a breakpoint in malloc error break to debug``` Let me know what other infos you need

Dario Heinisch · Answer

Not sure if this is related but if I fire 100 api requests at the same time to query data I get the following error in my logs

Dario Heinisch · Answer

```2023 03 02T19 35 49 920063Z C i q c h p JsonQueryProcessorState 192 Uh oh Error java lang ArrayIndexOutOfBoundsException Index 8 out of bounds for length 8 at io questdb griffin engine groupby vect GroupByRecordCursorFactory$RostiRecordCursor buildRosti GroupByRecordCursorFactory java 377 at io questdb griffin engine groupby vect GroupByRecordCursorFactory$RostiRecordCursor hasNext GroupByRecordCursorFactory java 275 at io questdb cutlass http processors JsonQueryProcessorState onQuerySetupFirstRecord JsonQueryProcessorState java 758 at io questdb cutlass http processors JsonQueryProcessorState doFirstRecordLoop JsonQueryProcessorState java 465 at io questdb cutlass http processors JsonQueryProcessorState onQueryPrefix JsonQueryProcessorState java 722 at io questdb cutlass http processors JsonQueryProcessorState resume JsonQueryProcessorState java 868 at io questdb cutlass http processors JsonQueryProcessor doResumeSend JsonQueryProcessor java 306 at io questdb cutlass http processors JsonQueryProcessor executeSelect JsonQueryProcessor java 550 at io questdb cutlass http processors JsonQueryProcessor executeCachedSelect JsonQueryProcessor java 469 at io questdb cutlass http processors JsonQueryProcessor execute0 JsonQueryProcessor java 174 at io questdb cutlass http processors JsonQueryProcessor onRequestComplete JsonQueryProcessor java 236 at io questdb cutlass http HttpConnectionContext handleClientRecv HttpConnectionContext java 604 at io questdb cutlass http HttpConnectionContext handleClientOperation HttpConnectionContext java 203 at io questdb cutlass http HttpServer$1 lambda$$0 HttpServer java 86 at io questdb network AbstractIODispatcher processIOQueue AbstractIODispatcher java 189 at io questdb cutlass http HttpServer$1 run HttpServer java 101 at io questdb mp Worker run Worker java 118 ```

Nicolas Hourcard · Answer

hey Dario we ll look into this

Alex Pelagenko · Answer

would be good if you file github issue with description of how you run questdb version steps etc

Dario Heinisch · Answer