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Questions tagged [apacheignite]

70 questions
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Apache Ignite internal locking for cache and PME Updates

I want to understand the internal locking mechanism used by Apache Ignite for Cache and PME updates: Scenario 1 : Persistent cache For a persistent cache, it requires lock during checkpointing and put operation. I am trying to understand at what…
Lokesh
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Apache Ignite: Off heap Eviction Vs Cache Eviction policy

I am currently running into Out of memory with my data region and i am trying to understand storage and eviction policy for ignite cache : Out of memory in data region [name=default, initSize=256.0 MiB, maxSize=8.0 GiB, persistenceEnabled=false] As…
Lokesh
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Ignite throws SocketTimeoutException randomly while running in PROD

It throws below error and restarts thereafter without printing much logs. TcpDiscoverySpi [tcp-disco-sock-reader-[]-#13-#76] Failed to initialize connection (this can happen due to short time network problems and can be ignored if does not affect…
kinjal patel
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Ignite system-critical thread blocked

I have a 2 node Ignite cluster on dev environment. Version 2.9.0 I have enabled persistence in my data region configs. When I start cluster it runs fine. Now when I shutdown node one by one and restart them, to check if persistence is working…
Shades88
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Apache Ignite repository save method is doing only UPDATE instead of INSERT

I'm developing a Spring Boot + Impala app using Apache Ignite as cache store. The problem is IgniteRepository.save(key,entity) is only running UPDATE query instead of INSERT. pom.xml 2.14.0 …
ani0710
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How is Apache Ignite page memory related to heap and non-heap?

I have java application running on ignite cluster. In ignite logs there are various parameters are logged. eg., heap, non heap and pagememory. ignite.log ^-- PageMemory [pages=82885] ^-- Heap [used=661MB, free=89.24%, comm=6144MB] ^--…
jdk
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Deprecated GridSslContextFactory in apache ignite

I use apache ignite 2.15.0 and I use GridClientConfiguration. It has a method setSslContextFactory(GridSslContextFactory sslCtxFactory), but GridSslContextFactory is marked as deprecated. There is no other method with a similar function in this…
Rodriguez
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How can I enable ignite-geospatial module within Ignite Cluster on Kubernetes using GridGain Community?

Background I am running an Ignite Cluster within Kubernetes and wish to use Java Thick Client to load geospatial objects into an Ignite Cache. I succeed on local deployments where ignite-geospatial module is loaded from GridGain external repository,…
Levi
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What's a cacheMode of ApacheIgnite cache when created programmatically without CacheConfiguration?

Question 1 : I have an existing project where ApacheIgnite Cluster is used. Instead of using Ignite api directly the wrapper class was created that implements most of methods of the Ignite interface. One of the methods is IgniteCache…
vs777
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Ignite - hsprefdata_ignite File deletion

I am using CentOS as my Environment and running Ignite on it my CentOS create hsprefdata_ignite folder in /tmp directory. But CentOS run a cron to delete these file in every 10 and 30th day , does it can affect my node and can be possible reason of…
Ritvik Rohatgi
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Ignite: First 10 long running cache futures

I am running Ignite nodes and during my operation it show this warning and my service become unresponsive how to resolve this! 12:18:10,035 [grid-timeout-worker-#39] WARN org.apache.ignite.internal.diagnostic - First 10 long running cache…
Ritvik Rohatgi
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Apache Ignite unknown node trying to connect

Unwanted node trying to connect Apache Ignite cluster. Due to which node goes down & cluster become unstable. How to restrict unknown node trying to connect Ignite cluster.
Harshad
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Caches in the Context of Apache Ignite SQL

Apache Ignite is defined as a "Distributed database for high‑performance applications with in‑memory speed". Given its in-memory speed, it is used as an SQL-supported cache in many use cases. When you think of Apache Ignite in the context of SQL,…
Minura Punchihewa
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DESCRIBE TABLE Equivalent for Apache Ignite

I am looking to get the column names and the data types for my Apache Ignite tables. Is there a SQL query that can be used to accomplish this? Maybe an equivalent to the DESCRIBE TABLE command? If this is not possible using SQL, can it be done using…
Minura Punchihewa
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How to get actual filter query from CacheEntryEvent in Apache Ignite CQ?

I have created InitialQuery lets say ( employee_id > 10) then created remote filter where I will add any condition runtime . Now in localListener I want to findout which filter condition was triggered in OnUpdated method using CacheEntryEvent.
Dhiraj Surve
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