[infinispan-dev] Amanuensis: the infinispan clustered indexwriter

[Bela Ban]

Hey Tristan, Sanne,

make sure you didn't use any classes in the org.jgroups.mux package; the 
new multiplexer (written by Paul) is in org.jgroups.blocks.mux. There is 
a test MuxRpcDispatcherTest, which shows you how to use it. Otherwise, I 
hang out in #jgroups @ irc.freenode.net...



On 1/12/11 12:31 PM, Sanne Grinovero wrote:
> Hi Tristan,
> thank you very much, this is looking great; indeed I see some familiar
> patterns, but also some interesting new approaches.
>
> Some doubts:
> 1) I see you don't depend on the mux implementation
> org.jboss.ha.core.channelfactory.MuxChannel but in the one provided in
> jgroups. I was recommended to use
> org.jboss.ha.core.channelfactory.MuxChannel, but don't remember the
> reason, if any it might be outdated. Did you find out there's no need
> for this additional dependency?
>
> 2) Could you clarify the licensing, I'd like to reuse some of this
> code if possible.
> I hope it will be Hibernate Search compatible, also because I see you
> copied some code.. could you then restore the original @authors where
> due? (I might be wrong and didn't check in depth, just the methods in
> ExecutorContext look very similar to Search's Workspace. Actually it
> seems you was inspired by an older copy, while some bugs where now
> fixed *1, so you might as well want to depend on that code instead, to
> get more fixes in future).
>
> 3) I can't compile it:
> Non-resolvable parent POM: Could not find artifact
> net.dataforte:dataforte-parent:pom:6
>
> 4) I'd recommend you to make the IndexOperation implementations
> immutable, it seems you're suffering a bit from index visibility.
>
> 5) No tests ? :P
>
> *1 exceptions in backend threads wheren't guaranteed to be handled and
> could kill your helpers - seems you're affected too.
>
> Cheers,
> Sanne
>
> 2011/1/12 Tristan Tarrant<tristan.tarrant at gmail.com>:
>> Dear all,
>>
>> just wanted to let you know that I have published Amanuensis on GitHub:
>> https://github.com/tristantarrant/amanuensis
>>
>> As the subject says, Amanuensis is a clustered IndexWriter for Infinispan's
>> Lucene Directory which overcomes the usual limitation of having only one
>> writer open at any one time on a Directory by using JGroups muxed channels
>> to stream changes from the slaves to the coordinator.
>>
>> I have to thank Sanne for help in learning about JGroups muxed channels and
>> also for pointing me at Hibernate Search's backend. My approach is nearly
>> identical, but I wanted something that was a bit closer to a Lucene
>> IndexWriter.
>>
>> Tell me what you think.
>>
>> Tristan
>>
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-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss