[jira] [Created] (IGNITE-13403) Update JDBC metadata to match actual capabilities

2020-09-04 Thread Taras Ledkov (Jira)
Taras Ledkov created IGNITE-13403: - Summary: Update JDBC metadata to match actual capabilities Key: IGNITE-13403 URL: https://issues.apache.org/jira/browse/IGNITE-13403 Project: Ignite Issue

[jira] [Created] (IGNITE-13404) ignite.sh fails to set default JVM parameters

2020-09-04 Thread Stephen Darlington (Jira)
Stephen Darlington created IGNITE-13404: --- Summary: ignite.sh fails to set default JVM parameters Key: IGNITE-13404 URL: https://issues.apache.org/jira/browse/IGNITE-13404 Project: Ignite

[jira] [Created] (IGNITE-13405) [Pyignite] Invalid cache configuration parameters

2020-09-04 Thread Ivan Smirnov (Jira)
Ivan Smirnov created IGNITE-13405: - Summary: [Pyignite] Invalid cache configuration parameters Key: IGNITE-13405 URL: https://issues.apache.org/jira/browse/IGNITE-13405 Project: Ignite Issue

Limit/Offset index scan

2020-09-04 Thread Vladimir Pligin
Hi Igniters, It seems that it's not possible to implement effective leader-board with the current Ignite indexes. Leader-board stores a score and an id of a player of some game. Score is indexed. One of the possible requests to that data structure is to get some range of scores based on their rank

Re: Limit/Offset index scan

2020-09-04 Thread Denis Magda
Hi Vladimir, Usually, LSM-storage engines serve the range searches the best (Cassandra is one of the examples). The SortedSet of Redis is one of the typical components you can find in LSM-engines. Presently, Ignite neither supports an LSM store nor a SortedSet data structure. However, the range s

Re: Limit/Offset index scan

2020-09-04 Thread Valentin Kulichenko
Hi Vladimir, As far as I know, Redis' SortedSet is not shared. Is this correct? Is it even possible to support similar functionality for a partitioned dataset? -Val On Fri, Sep 4, 2020 at 8:58 AM Denis Magda wrote: > Hi Vladimir, > > Usually, LSM-storage engines serve the range searches the be

Re: Limit/Offset index scan

2020-09-04 Thread Denis Magda
Folks, please disregard my previous email. I confused the range search task when (the search boundaries are defined in a query) with the K largest elements problem described by Vladimir. Personally, I don't think there is a practical need for partitioned sorted sets. Even if you store thousands of