Indhumathi27 commented on a change in pull request #3622: [CARBONDATA-3702]
Clean temp index files in parallel in merge index flow
URL: https://github.com/apache/carbondata/pull/3622#discussion_r382525290
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File path:
integration/spark-common/src/main/scala/org/apache/spark/rdd/CarbonMergeFilesRDD.scala
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@@ -157,21 +157,23 @@ object CarbonMergeFilesRDD {
if (carbonTable.isHivePartitionTable &&
!StringUtils.isEmpty(tempFolderPath)) {
// remove all tmp folder of index files
val startDelete = System.currentTimeMillis()
- val numThreads = Math.min(Math.max(partitionInfo.size(), 1), 10)
- val executorService = Executors.newFixedThreadPool(numThreads)
- val carbonSessionInfo = ThreadLocalSessionInfo.getCarbonSessionInfo
+ // get all files in all folder of index files
+ val allTmpFiles = partitionInfo
+ .asScala
+ .map { partitionPath =>
+ FileFactory.getCarbonFile(partitionPath + "/" + tempFolderPath)
+ .listFiles().toList
+ }.toList.flatten.map(_.getAbsolutePath)
+ // delete files in parallel
+ sparkSession.sparkContext.parallelize(allTmpFiles).map {
+ deleteFileWithRetry(_, 3)
+ }.collect()
+ // delete dirs
partitionInfo
.asScala
.map { partitionPath =>
- executorService.submit(new Runnable {
- override def run(): Unit = {
- ThreadLocalSessionInfo.setCarbonSessionInfo(carbonSessionInfo)
- FileFactory.deleteAllCarbonFilesOfDir(
- FileFactory.getCarbonFile(partitionPath + "/" +
tempFolderPath))
- }
- })
+ FileFactory.deleteFile(partitionPath + "/" + tempFolderPath)
Review comment:
Can use CarbonCommonConstants.FILE_SEPARATOR instead of "/"
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