Voldemort 0.96 new configuration options

[ctasada]

Hi guys,

With the 0.96 release there are some new configuration options in Voldemort that are not documented.

Server Properties:

* Removed in 0.96

  - bdb.cleaner.lazy.migration

  - bdb.cache.evictln

  - bdb.minimize.scan.impact

* Added in 0.96

  - bdb.minimum.shared.cache

  - fetcher.max.bytes.per.sec

  - fetcher.min.bytes.per.sec

  - fetcher.reporting.interval.bytes

  - hdfs.fetcher.buffer.size

  - client.routing.get.timeout.ms

  - client.routing.getall.timeout.ms

  - client.routing.put.timeout.ms

  - client.routing.getversions.timeout.ms

  - client.routing.delete.timeout.ms

  - client.routing.allow.partial.getall

  - enable.jmx.clustername

  - service.interruptible 

Added memory-footprint to stores.xml

Client properties:

  - getall_routing_timeout_ms

  - put_routing_timeout_ms

  - get_routing_timeout_ms

  - getversions_routing_timeout_ms

  - delete_routing_timeout_ms

  - allow_partial_getalls

Some of these new properties look really interesting and I'm already investigating them, but I would like to hear, if possible, your comments regarding the different case scenarios and the stability of them.

Note: This documentation should be also added to the wiki and/or website.

Thanks,

Carlos.

[Lei Gao]

Hi Carlos,

Those timeout parameters are used to specify operation-specific timeout for a client. We will update the documentation on it.

I recommend that you don't spend too much time on those bdb specific parameters because they are associated with the BDB JE storage enhancements that will be officially released in the next major release, when documentation will be available for those newly added parameters.

Thanks,

Lei

[Carlos Tasada]

Thanks a lot Lei, looking forward for this info :)

Also the news that you're already working in the next release with BDB changes are really exciting :)

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[ctasada]

Hi Lei,

Is the documentation already updated? Did I missed it?

Thanks.

[Vinoth Chandar]

Carlos,

with the new release, we have meticulously documented all server and client params.. please take a look at the javadocs for ClientConfig and VoldemortConfig from the project-voldemort.com site.

[Carlos Tasada]

Hi Vinoth,

I'm sorry, but I cannot find it. I see the Javadocs and some new links like "Design" and "Build and Push", but I don't see detailed information about such new properties in the ClientConfig.

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[Vinoth Chandar]

Here you go
http://www.project-voldemort.com/voldemort/javadoc/all/

[Vinoth Chandar]

anyways, let me just answer your question specifically..

  - client.routing.get.timeout.ms

  - client.routing.getall.timeout.ms

  - client.routing.put.timeout.ms

  - client.routing.getversions.timeout.ms

  - client.routing.delete.timeout.ms

are routing timeouts specific to the operation. For example, if you wanted to timeout sooner on get() vs put()..