[jira] [Assigned] (IGNITE-6814) Detailed memory consumption on start and OOM reporting

[Vyacheslav Koptilin (JIRA)]

 [ 
https://issues.apache.org/jira/browse/IGNITE-6814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Vyacheslav Koptilin reassigned IGNITE-6814:
---

Assignee: Vyacheslav Koptilin  (was: Alexandr Fedotov)

> Detailed memory consumption on start and OOM reporting
> --
>
> Key: IGNITE-6814
> URL: https://issues.apache.org/jira/browse/IGNITE-6814
> Project: Ignite
>  Issue Type: Improvement
>Affects Versions: 2.0
>Reporter: Denis Magda
>Assignee: Vyacheslav Koptilin
>Priority: Blocker
>  Labels: iep-6, important, usability
> Fix For: 2.4
>
>
> Presently Ignite allocates 20% of RAM on a node startup, however, the user 
> doesn't see automatically chosen memory settings. Also, if there a node runs 
> out of RAM and throws an OOM error there are no hints on why this happened 
> and how to fix it.
> Suggestions: 
> * Add {{off-heap}} field to {{Topology Snapshot}} message. The field will 
> accumulate maximum size of all the data regions defined cluster-wide:
> {code}
> Topology snapshot [ver=1, servers=1, clients=0, CPUs=4, off-heap={N}, 
> heap=1.8GB, ]
> {code}
> * Print detailed memory configuration below {{Topology Snapshot}} message 
> following this format:
> {code}
> Data Regions Configured:
> ^-- Data_Region_Name [initSize=N, maxSize=N, persistenceEnabled={true|false}]
> {code}
> Example:
> {code}
> Data Regions Configured:
>^-- Default [initSize=100MB, maxSize=5.0 GB, persistenceEnabled=true]
>^-- RegionalMetrics [initSize=500MB, maxSize=15.0 GB, 
> persistenceEnabled=false]
> {code}
> * Provide guidelines on how to overcome OOM when it happens. Specify a data 
> region name with all its current parameters and suggest three possible things 
> - tweak maximum memory, setup eviction policies or enable Ignite persistence.
> {code}
> Out of memory in data region Region_Name [initSize=N, maxSize=N, 
> persistenceEnabled={true|false}]. Do one of the following:
>^-- Increase maximum size (DataRegionConfiguration.maxSize)
>^-- Enable Ignite persistence (DataRegionConfiguration.persistenceEnabled) 
> or
>^-- Enable eviction or expiration policies.
> {code}



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[jira] [Assigned] (IGNITE-6814) Detailed memory consumption on start and OOM reporting

[Alexandr Fedotov (JIRA)]

 [ 
https://issues.apache.org/jira/browse/IGNITE-6814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Alexandr Fedotov reassigned IGNITE-6814:


Assignee: Alexandr Fedotov

> Detailed memory consumption on start and OOM reporting
> --
>
> Key: IGNITE-6814
> URL: https://issues.apache.org/jira/browse/IGNITE-6814
> Project: Ignite
>  Issue Type: Improvement
>Affects Versions: 2.0
>Reporter: Denis Magda
>Assignee: Alexandr Fedotov
>Priority: Blocker
>  Labels: iep-6, usability
> Fix For: 2.4
>
>
> Presently Ignite allocates 20% of RAM on a node startup, however, the user 
> doesn't see automatically chosen memory settings. Also, if there a node runs 
> out of RAM and throws an OOM error there are no hints on why this happened 
> and how to fix it.
> Suggestions: 
> * Add {{off-heap}} field to {{Topology Snapshot}} message. The field will 
> accumulate maximum size of all the data regions defined cluster-wide:
> {code}
> Topology snapshot [ver=1, servers=1, clients=0, CPUs=4, off-heap={N}, 
> heap=1.8GB, ]
> {code}
> * Print detailed memory configuration below {{Topology Snapshot}} message 
> following this format:
> {code}
> Data Regions Configured:
> ^-- Data_Region_Name [initSize=N, maxSize=N, persistenceEnabled={true|false}]
> {code}
> Example:
> {code}
> Data Regions Configured:
>^-- Default [initSize=100MB, maxSize=5.0 GB, persistenceEnabled=true]
>^-- RegionalMetrics [initSize=500MB, maxSize=15.0 GB, 
> persistenceEnabled=false]
> {code}
> * Provide guidelines on how to overcome OOM when it happens. Specify a data 
> region name with all its current parameters and suggest three possible things 
> - tweak maximum memory, setup eviction policies or enable Ignite persistence.
> {code}
> Out of memory in data region Region_Name [initSize=N, maxSize=N, 
> persistenceEnabled={true|false}]. Do one of the following:
>^-- Increase maximum size (DataRegionConfiguration.maxSize)
>^-- Enable Ignite persistence (DataRegionConfiguration.persistenceEnabled) 
> or
>^-- Enable eviction or expiration policies.
> {code}



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