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BDB one env per store
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Yoav  
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 More options Aug 29 2010, 2:25 am
From: Yoav <yoavna...@gmail.com>
Date: Sat, 28 Aug 2010 23:25:04 -0700 (PDT)
Local: Sun, Aug 29 2010 2:25 am
Subject: BDB one env per store
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Hi,

We are using the above setting to create a separate environment for
each store.
Below is the configuration we use in server.xml
When Voldemort starts I see the following log lines, for each store we
have defined: (we have about 6)
[2010-08-29 06:16:03,445] INFO Creating environment for Store1:
(voldemort.store.bdb.BdbStorageConfiguration)
[2010-08-29 06:16:03,445] INFO     BDB cache size = 2621440000
(voldemort.store.bdb.BdbStorageConfiguration)
[2010-08-29 06:16:03,445] INFO     BDB je.cleaner.threads = 1
(voldemort.store.bdb.BdbStorageConfiguration)
[2010-08-29 06:16:03,445] INFO     BDB je.cleaner.minUtilization = 25
(voldemort.store.bdb.BdbStorageConfiguration)
[2010-08-29 06:16:03,445] INFO     BDB je.cleaner.minFileUtilization =
5 (voldemort.store.bdb.BdbStorageConfiguration)
[2010-08-29 06:16:03,445] INFO     BDB je.log.fileMax = 62914560
(voldemort.store.bdb.BdbStorageConfiguration)

Does this imply that each store would have a 2500MB cache, its own
cleaner thread, etc.?

Thanks!

Appnedix: bdb configuration
# BDB
bdb.sync.transactions=false
bdb.cache.size=2500MB
bdb.max.logfile.size=60MB
bdb.one.env.per.store=true
je.cleaner.minUtilization=25
bdb.cleaner.minUtilization=25
je.cleaner.threads=1
je.cleaner.readSize=102400
je.cleaner.lockTimeout=10000
je.checkpointer.highPriority=false
je.env.backgroundReadLimit=5
je.env.backgroundWriteLimit=5


 
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ijuma  
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 More options Aug 29 2010, 7:29 am
From: ijuma <ism...@juma.me.uk>
Date: Sun, 29 Aug 2010 04:29:47 -0700 (PDT)
Local: Sun, Aug 29 2010 7:29 am
Subject: Re: BDB one env per store
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On Aug 29, 7:25 am, Yoav <yoavna...@gmail.com> wrote:

> Does this imply that each store would have a 2500MB cache

No, we use the shared cache option so that all environments/stores
share the same cache.

> its own cleaner thread, etc.?

This is true, each environment/store has its own cleaner thread.

Best,
Ismael


 
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