feat: support batch read for openmldb-spark-connector

[tobegit3hub]

Relate issue:

• Resolve Support batch read for openmldb-spark-connector #3069

Usage:

  def main(args: Array[String]): Unit = {
    val spark = SparkSession.builder().master("local[*]").getOrCreate()

    val zkCluster ="127.0.0.1:2181"
    val zkPath = "/openmldb"
    val db = "db"
    val table = "spark_read_test"
    val options = Map("db" -> db, "table" -> table, "zkCluster" -> zkCluster, "zkPath" -> zkPath)
    
    val df = spark.read
      .format("openmldb")
      .options(options)
      .load()
    df.show()
  }

Known issues:

• Do not support partitions
• Fail to handle null data in InternalRow

[codecov]

Codecov Report

Base: 36.46% // Head: 36.47% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (6a2f961) compared to base (f178654).
Patch coverage: 37.93% of modified lines in pull request are covered.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3070      +/-   ##
============================================
+ Coverage     36.46%   36.47%   +0.01%     
  Complexity      393      393              
============================================
  Files           160      166       +6     
  Lines          9624     9680      +56     
  Branches       1132     1135       +3     
============================================
+ Hits           3509     3531      +22     
- Misses         5879     5913      +34     
  Partials        236      236              

Impacted Files	Coverage Δ
...ava/com/_4paradigm/openmldb/jdbc/SQLResultSet.java	14.38% <0.00%> (-0.06%)	⬇️
...a/com/_4paradigm/openmldb/spark/OpenmldbTable.java	0.00% <0.00%> (ø)
...ldb/spark/read/OpenmldbPartitionReaderFactory.java	0.00% <0.00%> (ø)
...radigm/openmldb/spark/read/OpenmldbReadConfig.java	0.00% <0.00%> (ø)
...m/_4paradigm/openmldb/spark/read/OpenmldbScan.java	0.00% <0.00%> (ø)
...adigm/openmldb/spark/read/OpenmldbScanBuilder.java	0.00% <0.00%> (ø)
...paradigm/openmldb/spark/read/SimplePartition.scala	0.00% <0.00%> (ø)
.../openmldb/spark/read/OpenmldbPartitionReader.scala	75.86% <75.86%> (ø)

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[github-actions]

Linux Test Report

       56 files       230 suites   1h 17m 21s ⏱️
11 923 tests 11 916 ✔️ 7 💤 0 ❌
16 924 runs  16 917 ✔️ 7 💤 0 ❌

Results for commit 6a2f961.

♻️ This comment has been updated with latest results.

[github-actions]

SDK Test Report

  91 files    91 suites   1m 40s ⏱️
182 tests 173 ✔️ 9 💤 0 ❌
228 runs  219 ✔️ 9 💤 0 ❌

Results for commit 6a2f961.

♻️ This comment has been updated with latest results.

[tobegit3hub]

Known issue, we may not get all data with select *.