spark AnalyzeTablesCommand 源码
spark AnalyzeTablesCommand 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/command/AnalyzeTablesCommand.scala
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.sql.execution.command
import scala.util.control.NonFatal
import org.apache.spark.sql.{Row, SparkSession}
/**
* Analyzes all tables in the given database to generate statistics.
*/
case class AnalyzeTablesCommand(
databaseName: Option[String],
noScan: Boolean) extends LeafRunnableCommand {
override def run(sparkSession: SparkSession): Seq[Row] = {
val catalog = sparkSession.sessionState.catalog
val db = databaseName.getOrElse(catalog.getCurrentDatabase)
catalog.listTables(db).foreach { tbl =>
try {
CommandUtils.analyzeTable(sparkSession, tbl, noScan)
} catch {
case NonFatal(e) =>
logWarning(s"Failed to analyze table ${tbl.table} in the " +
s"database $db because of ${e.toString}", e)
}
}
Seq.empty[Row]
}
}
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