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https://issues.apache.org/jira/browse/AMQ-4851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Nagy updated AMQ-4851:
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Description:
It's possible to specify absolute values to storeUsage and tempUsage in bytes
and usage percent to storeUsageHighWaterMark in per destination policies.
I would like to set them the other way: set storeUsage to a relative (percent)
value and limit a queue to given bytes.
The rationale behind this: I use a compressed file system, which compresses
messages more or less, depending on their actual contents.
The ability to set storeUsage to a percent value (similar to its counterpart
percentOfJvmHeap) would help to match the reality closer.
Also, I would like to limit queues to an absolute value, like -eg- 1 GiB, not 3
percent of 70% of a compressible file system, which can mean anything.
AMQ currently doesn't allow raising the limit above the file system capacity:
2013-11-06 12:39:39,247 | WARN | Store limit is 51200 mb, whilst the data
directory: /data/activemq/leveldb only has 50092 mb of usable space - resetting
to maximum available disk space: 50092 mb |
org.apache.activemq.broker.BrokerService | main
however, with my average messages, the file system compression ratio is above
4x, meaning that AMQ could write nearly 200 GiB to it.
was:
It's possible to specify absolute values to storeUsage and tempUsage in bytes
and usage percent to storeUsageHighWaterMark in per destination policies.
I would like to set them the other way: set storeUsage to a relative (percent)
value and limit a queue to given bytes.
The rationale behind this: I use a compressed file system, which compresses
messages more or less, depending on their actual contents.
The ability to set storeUsage to a percent value (similar to its counterpart
percentOfJvmHeap) would help to match the reality closer.
Also, I would like to limit queues to an absolute value, like -eg- 1 GiB, not 3
percent of 70% of a compressible file system, which can mean anything.
> Ability to set percent and exact values to storeUsage, tempUsage and per
> destination policies
> ---------------------------------------------------------------------------------------------
>
> Key: AMQ-4851
> URL: https://issues.apache.org/jira/browse/AMQ-4851
> Project: ActiveMQ
> Issue Type: New Feature
> Components: Broker, Message Store
> Affects Versions: 5.9.0
> Reporter: Attila Nagy
> Priority: Minor
>
> It's possible to specify absolute values to storeUsage and tempUsage in bytes
> and usage percent to storeUsageHighWaterMark in per destination policies.
> I would like to set them the other way: set storeUsage to a relative
> (percent) value and limit a queue to given bytes.
> The rationale behind this: I use a compressed file system, which compresses
> messages more or less, depending on their actual contents.
> The ability to set storeUsage to a percent value (similar to its counterpart
> percentOfJvmHeap) would help to match the reality closer.
> Also, I would like to limit queues to an absolute value, like -eg- 1 GiB, not
> 3 percent of 70% of a compressible file system, which can mean anything.
> AMQ currently doesn't allow raising the limit above the file system capacity:
> 2013-11-06 12:39:39,247 | WARN | Store limit is 51200 mb, whilst the data
> directory: /data/activemq/leveldb only has 50092 mb of usable space -
> resetting to maximum available disk space: 50092 mb |
> org.apache.activemq.broker.BrokerService | main
> however, with my average messages, the file system compression ratio is above
> 4x, meaning that AMQ could write nearly 200 GiB to it.
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