You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Andrew Or (JIRA)" <ji...@apache.org> on 2015/09/01 21:02:45 UTC

[jira] [Updated] (SPARK-9043) Serialize key, value and combiner classes in ShuffleDependency

     [ https://issues.apache.org/jira/browse/SPARK-9043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Or updated SPARK-9043:
-----------------------------
    Component/s:     (was: Spark Core)
                 Shuffle

> Serialize key, value and combiner classes in ShuffleDependency
> --------------------------------------------------------------
>
>                 Key: SPARK-9043
>                 URL: https://issues.apache.org/jira/browse/SPARK-9043
>             Project: Spark
>          Issue Type: Improvement
>          Components: Shuffle
>            Reporter: Matt Massie
>
> ShuffleManager implementations are currently not given type information regarding the key, value and combiner classes. Serialization of shuffle objects relies on them being JavaSerializable, with methods defined for reading/writing the object or, alternatively, serialization via Kryo which uses reflection.
> Serialization systems like Avro, Thrift and Protobuf generate classes with zero argument constructors and explicit schema information (e.g. IndexedRecords in Avro have get, put and getSchema methods).
> By serializing the key, value and combiner class names in ShuffleDependency, shuffle implementations will have access to schema information when registerShuffle() is called.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org