[ 
https://issues.apache.org/jira/browse/HUDI-981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

wangxianghu updated HUDI-981:
-----------------------------
    Description: 
At a high level, HoodieIndex should be irrelevant to engines. So we should make 
an abstract of it.

would be like this
{code:java}
public abstract class AbstractHoodieIndex<T extends HoodieRecordPayload,
    I extends HoodieWriteInput, K extends HoodieWriteKey, O extends 
HoodieWriteOutput, P> implements Serializable {
....
}
{code}
 

  was:
At a high level, HoodieIndex should be irrelevant to engines. So we should make 
an abstract of it.

would be like this
{code:java}
//代码占位符
public abstract class AbstractHoodieIndex<T extends HoodieRecordPayload,
    I extends HoodieWriteInput, K extends HoodieWriteKey, O extends 
HoodieWriteOutput, P> implements Serializable {
....
}
{code}
 


> Introduce AbstractHoodieIndex for hudi write client
> ---------------------------------------------------
>
>                 Key: HUDI-981
>                 URL: https://issues.apache.org/jira/browse/HUDI-981
>             Project: Apache Hudi
>          Issue Type: Sub-task
>            Reporter: wangxianghu
>            Assignee: wangxianghu
>            Priority: Major
>
> At a high level, HoodieIndex should be irrelevant to engines. So we should 
> make an abstract of it.
> would be like this
> {code:java}
> public abstract class AbstractHoodieIndex<T extends HoodieRecordPayload,
>     I extends HoodieWriteInput, K extends HoodieWriteKey, O extends 
> HoodieWriteOutput, P> implements Serializable {
> ....
> }
> {code}
>  



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