Re: Zedstore - compressed in-core columnar storage

2019-11-04 Thread Taylor Vesely
> When a zedstore table is queried using *invalid* ctid, the server > crashes due to assertion failure. See below, > > postgres=# select * from t1 where ctid = '(0, 0)'; > server closed the connection unexpectedly > This probably means the server terminated abnormally > before or while processing t

Re: Zedstore - compressed in-core columnar storage

2019-10-30 Thread Taylor Vesely
ng we can do to group together data that is accessed together can help zedstore to have larger, more frequent sequential reads. On Mon, Oct 28, 2019 at 3:22 PM Taylor Vesely wrote: > > When a zedstore table is queried using *invalid* ctid, the server > > crashes due to assertion fai

Re: Zedstore - compressed in-core columnar storage

2019-10-28 Thread Taylor Vesely
> When a zedstore table is queried using *invalid* ctid, the server > crashes due to assertion failure. See below, > > postgres=# select * from t2 where ctid = '(0, 0)'; > server closed the connection unexpectedly > This probably means the server terminated abnormally > before or while processing t

Re: Zedstore - compressed in-core columnar storage

2019-09-19 Thread Taylor Vesely
> When doing update operation, for each tuple being modified, > *tuplebuffers_insert()* says that there is no entry for the relation > being modified in the hash table although it was already added when > the first tuple in the table was updated. Why is it so? Currently, when doing an update, it w

Re: Memory-Bounded Hash Aggregation

2019-08-28 Thread Taylor Vesely
I started to review this patch yesterday with Melanie Plageman, so we rebased this patch over the current master. The main conflicts were due to a simplehash patch that has been committed separately[1]. I've attached the rebased patch. I was playing with the code, and if one of the table's most co