Thanks! Does MULTI_THREADED only help outside of a transaction? During a transaction the table will still be locked.
On Tuesday, May 27, 2014 10:47:46 PM UTC-7, Kartweel wrote: > > H2 is not multi-threaded in this version. So a single long running > statement will block everything else. You'll either need to split it up > into smaller inserts (can still be a single transaction, just smaller > queries), or you could try turning on MULTI_THREADED=1. > > There is multi-threaded mode, but in this version it doesn't work with > MVCC. I think in the latest beta version it might work, but if you are > after reliability I'd go with breaking up your long running statement into > smaller statements. > > On 28/05/2014 1:45 AM, Brian Craft wrote: > > Version 1.3.171. The only option I'm setting is MVCC, like > "somefile;MVCC=TRUE". I'll try to get a thread dump in a few minutes. > > Does this mean readers should not be blocked during the insert? > > On Tuesday, May 27, 2014 4:18:01 AM UTC-7, Noel Grandin wrote: >> >> Can you post a thread dump, so we can see where it is blocked? >> Also which version is this, and what does your DB URL look like? >> >> On 2014-05-25 20:24, Brian Craft wrote: >> > I'm doing a large "insert into .. select * from CSVREAD ...", which is >> in a transaction. It seems to be blocking >> > readers, regardless of whether MVCC is enabled. Is this expected? If I >> understand the threads on MVCC, it will allow >> > -- > You received this message because you are subscribed to the Google Groups > "H2 Database" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to h2-database...@googlegroups.com <javascript:>. > To post to this group, send email to h2-da...@googlegroups.com<javascript:> > . > Visit this group at http://groups.google.com/group/h2-database. > For more options, visit https://groups.google.com/d/optout. > > > -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to h2-database+unsubscr...@googlegroups.com. To post to this group, send email to h2-database@googlegroups.com. Visit this group at http://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.
