[FEATURE REQUEST] 'hoodie.datasource.write.precombine.field' only supports a single field

[LiJie20190102]

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Describe the problem you faced

Why does the configuration "hoodie.datasource.write.precombine.field" only support sorting on a single field? I think it is also possible to specify multiple fields for sorting

To Reproduce

Steps to reproduce the behavior:

Expected behavior

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Environment Description

• Hudi version : 0.12.3

• Spark version : 3.2.3

• Hive version : 3.1.3

• Hadoop version : 3.3.0

• Storage (HDFS/S3/GCS..) : hdfs

• Running on Docker? (yes/no) : no

Additional context

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Stacktrace

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[danny0405]

You are right, and we are planning to support this feature.