QueryParallelism

Hello, I would like to know if there is a way to increase the level of parallelism within a single node. The Default value appears to be one. I already tried adding the property “" in the xml file but it didn't work. Thanks Best regards, Alessandro

Virtual Ignite meetup tomorrow!

Fellow Igniters, I know many of you have to stay at home these days. I have good news for you: this doesn't mean that you can't attend Ignite meetups, as we're switching to a virtual format. The virus is not going to stop us :) Tomorrow I will be talking about some of the behind-the-scenes

Re: Is there any implementating way to use eclipselink, jpql (em.createQuery ) with ignite?

Hello! Please refer to Cache Store examples like this one: https://github.com/apache/ignite/blob/master/examples/src/main/java/org/apache/ignite/examples/datagrid/store/jdbc/CacheJdbcStoreExample.java Write through to RDBMS is not directly related to eclipselink, but there is no reason why they

Re: How to manual rebalance

Hello! Actually, we have this feature implemented thoroughly in the form of Baseline Topology: https://apacheignite.readme.io/docs/baseline-topology If a node goes away, rebalancing will only start when baseline topology is updated. In 2.8.0, auto-adjust after timeout may be configured. It is of

Re: Primary/Standby mode

Yes, that's my concern. Will look into the affinity function. Thanks & Regards, eerick -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/

Re: Primary/Standby mode

Stephen, It works for reads, but I assume that there write operations: > I have a lot of cross-node transactions Evgenii вт, 31 мар. 2020 г. в 09:09, Stephen Darlington < stephen.darling...@gridgain.com>: > True, but given that replicated caches have readFromBackup = true is that >

Re: Primary/Standby mode

True, but given that replicated caches have readFromBackup = true is that significant? Feels like it's a much easier and safer option than trying to write your own affinity function. > On 31 Mar 2020, at 16:28, Evgenii Zhuravlev wrote: > > Stephen, > > Even for Replicated cache, part of the

Re: Primary/Standby mode

Stephen, Even for Replicated cache, part of the partitions will be primary on one node and other on another node. So, I think it's possible to create a custom affinity function here. Best Regards, Evgenii вт, 31 мар. 2020 г. в 00:20, Stephen Darlington < stephen.darling...@gridgain.com>: > If

Re: Ignite 2.8.0. Heap mem issue

Hi, Thanks a lot for your reproducer. It was not entirely clear to me, but very useful. I've reproduced and discovered the issue. The new ticket [1] is created and will be fixed ASAP. Now you can try to use workaround: - use constant values at the INSERT command; - insert several rows by one

How to manual rebalance

Hi Guys - How do i control the rebalancing programmatically i.e. I don't want the rebalancing to happen immediately when node goes out of the cluster ( most of the times, graceful shutdown for updates). I will have rest endpoint or some command through i will initiate the rebalance if at all

Surrogate Keys and Ignite

Hi All, I also have a general question. Is it a good idea to have a surrogate key table in ignite? I want to avoid joins, and I don't want to use secondary indexes. I want to look up this surrogate key table (which should be very small in terms of volume and is replicated across all the nodes),

Continuous Query Questions

Hi All, I'd like to get your feedback regarding the following pattern. 1) CQ setup that listens to the changes to a cache on the local node only. 2) Upon receiving notification on a change, the listener makes additions to two other caches, one being on the local node (partitioned) and the other

Re: Do we have any Python experts in the community?

I'm not very experienced in Python, but if no one else wants to take a look, I'll do it. Best Regards, Igor On Sat, Mar 28, 2020 at 2:04 AM Denis Magda wrote: > Igniters, > > Is any of you is skillful enough to contribute improvements to our Python > thin client? For instance, that's one of

Re: How to connect a node into 2 isolated clusters?

thanks Stephen, for reminding the multicast stuff, I will take care. If use static IP, my question is still there, the node joining 2 isolating clusters will connecting everything togheter, right? I just found a solution, to set up igniteInstanceName. I didn't find the configuration in document

Re: How to connect a node into 2 isolated clusters?

Use one of the other IP finders, mostly likely the Static IP Finder. Here’s the documentation: https://apacheignite.readme.io/docs/tcpip-discovery I wouldn’t recommend you use multicast for anything other than quickly getting up and

Re: Primary/Standby mode

If you have enough memory to store all your data on a single machine, you can just use a replicated cache. Otherwise, you can use a partitioned cache and use “affinity” to make sure the data you need in a single transaction is located on a single machine. Regards, Stephen > On 30 Mar 2020, at

How to connect a node into 2 isolated clusters?

Hi team, I have 2 clusters - Spring with Ignite(server mode). The 2 clusters are running different business, thus i isolated them by using different multicastGroup Now i have another project, how could I start 2 ignite instance joining the 2 clusters, while still keeping the isolation? I tried