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[GitHub] [carbondata] vikramahuja1001 opened a new pull request #3917: [WIP] clean files refactor

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[GitHub] [carbondata] chetandb commented on a change in pull request #3917: [CARBONDATA-3978] Clean Files Refactor and support for trash folder in carbondata

chetandb commented on a change in pull request #3917:
URL: https://github.com/apache/carbondata/pull/3917#discussion_r509154365

##########
File path: integration/spark/src/test/scala/org/apache/carbondata/spark/testsuite/cleanfiles/TestCleanFileCommand.scala
##########
@@ -0,0 +1,484 @@
+/*
+ * 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.carbondata.spark.testsuite.cleanfiles
+
+import java.io.{File, PrintWriter}
+import java.util
+import java.util.List
+
+import org.apache.carbondata.cleanfiles.CleanFilesUtil
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.datastore.filesystem.CarbonFile
+import org.apache.carbondata.core.datastore.impl.FileFactory
+import org.apache.carbondata.core.util.CarbonUtil
+import org.apache.spark.sql.{CarbonEnv, Row}
+import org.apache.spark.sql.test.util.QueryTest
+import org.scalatest.BeforeAndAfterAll
+
+import scala.io.Source
+
+class TestCleanFileCommand extends QueryTest with BeforeAndAfterAll {
+
+ var count = 0
+
+ test("clean up table and test trash folder with In Progress segments") {
+ sql("""DROP TABLE IF EXISTS CLEANTEST""")
+ sql("""DROP TABLE IF EXISTS CLEANTEST1""")
+ sql(
+ """
+ | CREATE TABLE cleantest (name String, id Int)
+ | STORED AS carbondata
+ """.stripMargin)
+ sql(s"""INSERT INTO CLEANTEST SELECT "abc", 1""")
+ sql(s"""INSERT INTO CLEANTEST SELECT "abc", 1""")
+ sql(s"""INSERT INTO CLEANTEST SELECT "abc", 1""")
+ // run a select query before deletion
+ checkAnswer(sql(s"""select count(*) from cleantest"""),
+ Seq(Row(3)))
+
+ val path = CarbonEnv.getCarbonTable(Some("default"), "cleantest")(sqlContext.sparkSession)
+ .getTablePath
+ val tableStatusFilePath = path + CarbonCommonConstants.FILE_SEPARATOR + "Metadata" +
+ CarbonCommonConstants.FILE_SEPARATOR + "tableStatus"
+ editTableStatusFile(path)
+ val trashFolderPath = path + CarbonCommonConstants.FILE_SEPARATOR +
+ CarbonCommonConstants.CARBON_TRASH_FOLDER_NAME
+
+ assert(!FileFactory.isFileExist(trashFolderPath))
+ val dryRun = sql(s"CLEAN FILES FOR TABLE cleantest OPTIONS('isDryRun'='true')").count()
+ // dry run shows 3 segments to move to trash
+ assert(dryRun == 3)
+
+ sql(s"CLEAN FILES FOR TABLE cleantest").show
+
+ checkAnswer(sql(s"""select count(*) from cleantest"""),
+ Seq(Row(0)))
+ assert(FileFactory.isFileExist(trashFolderPath))
+ var list = getFileCountInTrashFolder(trashFolderPath)
+ assert(list == 6)
+
+ val dryRun1 = sql(s"CLEAN FILES FOR TABLE cleantest OPTIONS('isDryRun'='true')").count()
+ sql(s"CLEAN FILES FOR TABLE cleantest").show
+
+ count = 0
+ list = getFileCountInTrashFolder(trashFolderPath)
+ // no carbondata file is added to the trash
+ assert(list == 6)
+
+
+ val timeStamp = getTimestampFolderName(trashFolderPath)
+
+ // recovering data from trash folder
+ sql(
+ """
+ | CREATE TABLE cleantest1 (name String, id Int)
+ | STORED AS carbondata
+ """.stripMargin)
+
+ val segment0Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR + timeStamp +
+ CarbonCommonConstants.FILE_SEPARATOR + CarbonCommonConstants.LOAD_FOLDER + '0'
+ val segment1Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR + timeStamp +
+ CarbonCommonConstants.FILE_SEPARATOR + CarbonCommonConstants.LOAD_FOLDER + '1'
+ val segment2Path = trashFolderPath + CarbonCommonConstants.FILE_SEPARATOR + timeStamp +
+ CarbonCommonConstants.FILE_SEPARATOR + CarbonCommonConstants.LOAD_FOLDER + '2'
+
+ sql(s"alter table cleantest1 add segment options('path'='$segment0Path'," +
+ s"'format'='carbon')").show()
+ sql(s"alter table cleantest1 add segment options('path'='$segment1Path'," +
+ s"'format'='carbon')").show()
+ sql(s"alter table cleantest1 add segment options('path'='$segment2Path'," +
+ s"'format'='carbon')").show()
+ sql(s"""INSERT INTO CLEANTEST SELECT * from cleantest1""")
+
+ // test after recovering data from trash
+ checkAnswer(sql(s"""select count(*) from cleantest"""),
+ Seq(Row(3)))
+
+ sql(s"CLEAN FILES FOR TABLE cleantest options('force'='true')").show
+ count = 0
+ list = getFileCountInTrashFolder(trashFolderPath)
+ // no carbondata file is added to the trash
+ assert(list == 0)
+ sql("""DROP TABLE IF EXISTS CLEANTEST""")
+ sql("""DROP TABLE IF EXISTS CLEANTEST1""")
+ }
+
+
+ test("clean up maintable table and test trash folder with SI with IN PROGRESS segments") {
+
+ sql("""DROP TABLE IF EXISTS CLEANTEST_WITHSI""")
+ sql("""DROP TABLE IF EXISTS CLEANTEST1""")
+ sql(
+ """
+ | CREATE TABLE CLEANTEST_WITHSI (id Int, name String, add String )
+ | STORED AS carbondata
+ """.stripMargin)
+ sql(s"""INSERT INTO CLEANTEST_WITHSI SELECT 1,"abc","def"""")
+ sql(s"""INSERT INTO CLEANTEST_WITHSI SELECT 2, "abc","def"""")
+ sql(s"""INSERT INTO CLEANTEST_WITHSI SELECT 3, "abc","def"""")
+
+ sql(s"""CREATE INDEX SI_CLEANTEST on cleantest_withSI(add) as 'carbondata' """)
+
+ checkAnswer(sql(s"""select count(*) from cleantest_withSI"""),
+ Seq(Row(3)))
+ checkAnswer(sql(s"""select count(*) from si_cleantest"""),
+ Seq(Row(3)))
+
+ val mainTablePath = CarbonEnv.getCarbonTable(Some("default"), "cleantest_withsi")(sqlContext
+ .sparkSession).getTablePath
+ editTableStatusFile(mainTablePath)
+ val mainTableTrashFolderPath = mainTablePath + CarbonCommonConstants.FILE_SEPARATOR +
+ CarbonCommonConstants.CARBON_TRASH_FOLDER_NAME
+
+ val siTablePath = CarbonEnv.getCarbonTable(Some("default"), "si_cleantest")(sqlContext
+ .sparkSession).getTablePath
+ editTableStatusFile(siTablePath)
+ val siTableTrashFolderPath = siTablePath + CarbonCommonConstants.FILE_SEPARATOR +
+ CarbonCommonConstants.CARBON_TRASH_FOLDER_NAME
+
+ assert(!FileFactory.isFileExist(mainTableTrashFolderPath))
+ assert(!FileFactory.isFileExist(siTableTrashFolderPath))
+
+ val dryRun = sql(s"CLEAN FILES FOR TABLE cleantest_withsi OPTIONS('isDryRun'='true')").count()
+ // dry run shows 6 segments to move to trash. 3 for main table, 3 for si table
+ assert(dryRun == 6)
+
+ sql(s"CLEAN FILES FOR TABLE CLEANTEST_WITHSI").show()
+

Review comment:
Add scenario of drop index(SI) and then clean files on main and SI table.

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