zml1206 commented on code in PR #6855:
URL: https://github.com/apache/incubator-gluten/pull/6855#discussion_r1719485266
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backends-velox/src/main/scala/org/apache/gluten/backendsapi/velox/VeloxListenerApi.scala:
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@@ -27,138 +26,67 @@ import org.apache.gluten.vectorized.{JniLibLoader,
JniWorkspace}
import org.apache.spark.{SparkConf, SparkContext}
import org.apache.spark.api.plugin.PluginContext
+import org.apache.spark.internal.Logging
import
org.apache.spark.sql.execution.datasources.velox.{VeloxOrcWriterInjects,
VeloxParquetWriterInjects, VeloxRowSplitter}
import org.apache.spark.sql.expression.UDFResolver
-import org.apache.spark.sql.internal.{GlutenConfigUtil, StaticSQLConf}
-import org.apache.spark.util.SparkDirectoryUtil
+import org.apache.spark.sql.internal.GlutenConfigUtil
+import org.apache.spark.util.{SparkDirectoryUtil, SparkResourceUtil}
import org.apache.commons.lang3.StringUtils
-import scala.sys.process._
+import java.util.concurrent.atomic.AtomicBoolean
-class VeloxListenerApi extends ListenerApi {
- private val ARROW_VERSION = "1500"
+class VeloxListenerApi extends ListenerApi with Logging {
+ import VeloxListenerApi._
override def onDriverStart(sc: SparkContext, pc: PluginContext): Unit = {
- val conf = pc.conf()
- // sql table cache serializer
- if (conf.getBoolean(GlutenConfig.COLUMNAR_TABLE_CACHE_ENABLED.key,
defaultValue = false)) {
- conf.set(
- StaticSQLConf.SPARK_CACHE_SERIALIZER.key,
- "org.apache.spark.sql.execution.ColumnarCachedBatchSerializer")
+ if (!driverInitialized.compareAndSet(false, true)) {
+ // Make sure we call the static initializers only once.
+ logInfo(
+ "Skip rerunning static initializers since they are only supposed to
run once." +
+ " You see this message probably because you are creating a new
SparkSession.")
Review Comment:
If just re-create sparkSession, it will not restart the driver. Re-creating
sparkContext will restart the driver, but a new sparkConf may be set, so is it
better to re-initialize it once?
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