morrifeldman commented on a change in pull request #10046:
URL: https://github.com/apache/druid/pull/10046#discussion_r444986289
##########
File path:
indexing-service/src/main/java/org/apache/druid/indexing/common/task/batch/parallel/PartialDimensionDistributionTask.java
##########
@@ -200,6 +202,10 @@ public TaskStatus runTask(TaskToolbox toolbox) throws
Exception
Preconditions.checkNotNull(partitionDimension, "partitionDimension
required in partitionsSpec");
boolean isAssumeGrouped = partitionsSpec.isAssumeGrouped();
+ final File tmpDir = toolbox.getIndexingTmpDir();
+ // Temporary directory is automatically removed when this IndexTask
completes.
+ FileUtils.forceMkdir(tmpDir);
Review comment:
Good idea. `forceMkdir` has guards to check if the directory already
exists and is actually a directory rather than a file, so I didn't add any
extra guards in TaskToolbox.
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