PMEM-SPILL of OAP-1.1 cannot support spark-3.0.1.

[haojinIntel]

We try to run K-means algorithm by using PMEM-SPILL on spark-3.0.1 while meet the issue like following picture:

PMEM-SPILL overwrite the source code of spark("src/main/scala/org/apache/spark/internal/config/package.scala") and add some configs for PMEM

While the package.scala of spark-3.0.0 is different with the one of spark-3.0.1 and the issue is caused by the package.scala of OAP-1.1 PMEM-SPILL not contains EXECUTOR_ALLOW_SPARK_CONTEXT.

So how can we decouple package.scala of spark? If we cannot decouple this file, we need to adapt to all some versions of spark.

[haojinIntel]

@zhixingheyi-tian @winningsix @yma11 @yeyuqiang Please help to track the issue. Thanks!

[JustDoCoder]

@haojinIntel Now, the pmem-spill project has not been adapted to spark 3.0.1 and only supports Spark 3.0.0. Compared with Spark3.0.0, the configuration items in package.scala of Spark3.0.1 are slightly changed. Similarly, Spark 3.1.1 also has the same problem. I submitted a PR to make pmem-spill support Spark 3.1.1, please refer to #33 .If you have any questions, welcome to discuss and communicate