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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:21:16 UTC
[jira] [Updated] (SPARK-12474) support deserialization for physical
plan and hive logical plan from JSON string
[ https://issues.apache.org/jira/browse/SPARK-12474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-12474:
---------------------------------
Labels: bulk-closed (was: )
> support deserialization for physical plan and hive logical plan from JSON string
> --------------------------------------------------------------------------------
>
> Key: SPARK-12474
> URL: https://issues.apache.org/jira/browse/SPARK-12474
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Reporter: Wenchen Fan
> Priority: Minor
> Labels: bulk-closed
>
> SPARK-12321 add a framework based on reflection that can serialize {{TreeNode}} to JSON and deserialize it back. However, it can't handle all corner cases and we bypass them in the test, see https://github.com/apache/spark/pull/10311/files#diff-238d584c15e16c24f49a40bcf163fe13R190 and https://github.com/apache/spark/pull/10311/files#diff-238d584c15e16c24f49a40bcf163fe13R212.
> known corner cases:
> 1. ExpressionEncoder
> 2. BaseRelation
> 3. hive logical plan
> 4. physical plan
> The framework is in catalyst module and may not be able to handle corner cases from other modules, an idea is defining a {{JsonSerializable}} trait and implement it for corner cases.
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