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HADOOP-18582. Addendum: Skip unnecessary cleanup logic in DistCp. (#5409) 

Followup to the original HADOOP-18582.

Temporary path cleanup is re-enabled for -append jobs
as these will create temporary files when creating or overwriting files.

Contributed by Ayush Saxena
This commit is contained in:
Ayush Saxena 2023-02-23 00:59:41 +05:30 committed by Steve Loughran
parent ee71318d72
commit 84e999b35c
No known key found for this signature in database
GPG Key ID: D22CF846DBB162A0
2 changed files with 6 additions and 11 deletions
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5
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/CopyCommitter.java
View File

@ -153,10 +153,7 @@ public class CopyCommitter extends FileOutputCommitter {
final boolean directWrite = conf.getBoolean(
DistCpOptionSwitch.DIRECT_WRITE.getConfigLabel(), false);
final boolean append = conf.getBoolean(
DistCpOptionSwitch.APPEND.getConfigLabel(), false);
final boolean useTempTarget = !append && !directWrite;
if (!useTempTarget) {
if (directWrite) {
return;
}

12
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestCopyCommitter.java
View File

@ -586,13 +586,11 @@ public class TestCopyCommitter {
@Test
public void testCommitWithCleanupTempFiles() throws IOException {
testCommitWithCleanup(true, false);
testCommitWithCleanup(false, true);
testCommitWithCleanup(true, true);
testCommitWithCleanup(false, false);
testCommitWithCleanup(true);
testCommitWithCleanup(false);
}
private void testCommitWithCleanup(boolean append, boolean directWrite)throws IOException {
private void testCommitWithCleanup(boolean directWrite) throws IOException {
TaskAttemptContext taskAttemptContext = getTaskAttemptContext(config);
JobID jobID = taskAttemptContext.getTaskAttemptID().getJobID();
JobContext jobContext = new JobContextImpl(
@ -611,7 +609,7 @@ public class TestCopyCommitter {
DistCpOptions options = new DistCpOptions.Builder(
Collections.singletonList(new Path(sourceBase)),
new Path("/out"))
.withAppend(append)
.withAppend(true)
.withSyncFolder(true)
.withDirectWrite(directWrite)
.build();
@ -631,7 +629,7 @@ public class TestCopyCommitter {
null, taskAttemptContext);
committer.commitJob(jobContext);
if (append || directWrite) {
if (directWrite) {
ContractTestUtils.assertPathExists(fs, "Temp files should not be cleanup with append or direct option",
tempFilePath);
} else {