[jira] [Comment Edited] (IGNITE-3314) Implement Serializable in org.apache.ignite.cache.store.cassandra.datasource.DataSource

["Igor Rudyak (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-3314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15428616#comment-15428616 ] 

Igor Rudyak edited comment on IGNITE-3314 at 8/19/16 6:45 PM:
--------------------------------------------------------------

DataSource now implements Externalizable (and Serializable as well), but there is one limitation. DataSource is only partially serialises its Cassandra connection options. Here is the list of DataSource connection options which will not be serialized/deserialized:

  - LoadBalancingPolicy
  - ReconnectionPolicy
  - RetryPolicy
  - AddressTranslator
  - SpeculativeExecutionPolicy
  - AuthProvider
  - SslOptions
  - PoolingOptions
  - SocketOptions
  - NettyOptions
  
*The main reason - corresponding Cassandra interfaces doesn't extend Serializable.*

Workaround:

1) Implement your own wrapper, above corresponding Cassandra connection option specific implementation which you are going to use (TokenAwarePolicy, RoundRobinPolicy and etc.)

2) Wrapper should also implement Externalizable - there you should put all your custom serialization/deserialization logic

3) In the such case, DataSource will detect that corresponding connection option object implements Serializable and it will be used during DataSource serialization/deserialization


was (Author: irudyak):
DataSource now implements Externalizable (and Serializable as well), but there is one limitation. DataSource is only partially serialises its Cassandra connection options. Here is the list of DataSource connection options which will not be serialized/deserialized:

  - LoadBalancingPolicy
  - ReconnectionPolicy
  - RetryPolicy
  - AddressTranslator
  - SpeculativeExecutionPolicy
  - AuthProvider
  - SslOptions
  - PoolingOptions
  - SocketOptions
  - NettyOptions
  
*The main reason - corresponding Cassandra interfaces doesn't extend Serializable.*

Workaround:

1) Implement your own wrapper, above corresponding Cassandra connection option specific implementation which you are going to use (TokenAwarePolicy, RoundRobinPolicy and etc.)

2) Wrapper should also implement Externalizable - there you should put all your custom serialization/deserialization logic

> Implement Serializable in org.apache.ignite.cache.store.cassandra.datasource.DataSource
> ---------------------------------------------------------------------------------------
>
>                 Key: IGNITE-3314
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3314
>             Project: Ignite
>          Issue Type: Sub-task
>          Components: cache
>            Reporter: Igor Rudyak
>            Assignee: Igor Rudyak
>            Priority: Minor
>             Fix For: 1.8
>
>
> Current implementation of org.apache.ignite.cache.store.cassandra.utils.datasource.DataSource doesn't implement Serializable, thus for distributed Ignite clusters, CassandraCacheStoreFactory could only be setup through Spring XML file, but not from code. 
> New version of org.apache.ignite.cache.store.cassandra.utils.datasource.DataSource should  implement Serializable



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