Re: Re:Re: Re:Re: about write behind problems

[vkulichenko]

Can you provide a reproducer?

-Val



--
View this message in context: 
http://apache-ignite-users.70518.x6.nabble.com/about-write-behind-problems-tp15160p15255.html
Sent from the Apache Ignite Users mailing list archive at Nabble.com.

Re: Re:Re: about write behind problems

[vkulichenko]

Did you set the writeThrough property? It's needed to enable write to cache
store, regardless of whether it's write-behind mode or not.

cacheCfg.setWriteThrough(true);

-Val



--
View this message in context: 
http://apache-ignite-users.70518.x6.nabble.com/about-write-behind-problems-tp15160p15219.html
Sent from the Apache Ignite Users mailing list archive at Nabble.com.

Re:Re: about write behind problems

[Lucky]

Ok, in this case,I did not tell about loading cache.
It is about persistent data.
I want to insert 50 records into DB.
my setting is:
  cacheCfg.setWriteBehindEnabled(true);
  cacheCfg.setWriteBehindFlushSize(10240);
cacheCfg.setWriteBehindFlushFrequency(1);
cacheCfg.setWriteBehindBatchSize(1);
cacheCfg.setWriteBehindFlushThreadCount(3);




My question is:
1.WriteBehindEnabled parameter is set to true,but it seems not work.
   String sql = "insert into "mycache1".tableA(_key,fid,fname) 
select(fid,fid,orgid) from "mycache2".tableB";
   cache.query(new SqlFieldQuery(sql));


   this is update data to DB.
   but it wait until all data has finished  persistent to DB.
I just hope the flow can run continue when the cache is updated ,but not need 
to wait persistent .

2. setWriteBehindBatchSize is set to 1 and setWriteBehindFlushFrequency is 
set to 5 seconds,but in the log ,I see  that is not 1 each time,and There 
is no interval of 10 seconds


Thanks.
Lucky



At 2017-07-21 03:18:06, "vkulichenko" <valentin.kuliche...@gmail.com> wrote:
>Hi Lucky,
>
>Write behind affects the way how underlying store is updated when you update
>the cache. Load cache process is different and is not related to this. More
>information here: https://apacheignite.readme.io/docs/persistent-store
>
>-Val
>
>
>
>--
>View this message in context: 
>http://apache-ignite-users.70518.x6.nabble.com/about-write-behind-problems-tp15160p15205.html
>Sent from the Apache Ignite Users mailing list archive at Nabble.com.

Re: about write behind problems

[vkulichenko]

Hi Lucky,

Write behind affects the way how underlying store is updated when you update
the cache. Load cache process is different and is not related to this. More
information here: https://apacheignite.readme.io/docs/persistent-store

-Val



--
View this message in context: 
http://apache-ignite-users.70518.x6.nabble.com/about-write-behind-problems-tp15160p15205.html
Sent from the Apache Ignite Users mailing list archive at Nabble.com.

Re: write behind problems

[vkulichenko]

Hi Lucky,

I don't understand the use case. Are you loading data from DB to cache, or
writing to cache? Can you provide exact steps describing what you're doing?

-Val



--
View this message in context: 
http://apache-ignite-users.70518.x6.nabble.com/write-behind-problems-tp15152p15201.html
Sent from the Apache Ignite Users mailing list archive at Nabble.com.

write behind problems

[Lucky]

Hi:
As the updated data is more than 50,so I set write behind parameters to 
true with java code .
but it did not work .It's still wait until all data is persisted.
   When I debug the code ,I found my cache's cacheconfiguration is correctly 
set to true;
the setting is:
cacheCfg.setWriteBehindEnabled(true);
cacheCfg.setWriteBehindFlushSize(10240);
cacheCfg.setWriteBehindFlushFrequency(5000);
cacheCfg.setWriteBehindBatchSize(1);
cacheCfg.setWriteBehindFlushThreadCount(3);


 I startup a Ignite node by default-config.xml.
 And use lifeCycleBean(after_node_start event) to load above configure and 
load all datas to cache.
 
Any suggestion?


Thanks.
Lucky