mukund-thakur commented on a change in pull request #1404: HDFS-13660 Copy file
till the source file length during distcp
URL: https://github.com/apache/hadoop/pull/1404#discussion_r326082051
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File path:
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestCopyMapper.java
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@@ -444,6 +450,57 @@ private void testCopyingExistingFiles(FileSystem fs,
CopyMapper copyMapper,
}
}
+ @Test(timeout = 40000)
+ public void testCopyWhileAppend() throws Exception {
+ deleteState();
+ mkdirs(SOURCE_PATH + "/1");
+ touchFile(SOURCE_PATH + "/1/3");
+ CopyMapper copyMapper = new CopyMapper();
+ StubContext stubContext = new StubContext(getConfiguration(), null, 0);
+ Mapper<Text, CopyListingFileStatus, Text, Text>.Context context =
+ stubContext.getContext();
+ copyMapper.setup(context);
+ final Path path = new Path(SOURCE_PATH + "/1/3");
+ int manyBytes = 100000000;
+ appendFile(path, manyBytes);
+ ScheduledExecutorService scheduledExecutorService =
+ Executors.newSingleThreadScheduledExecutor();
+ Runnable task = new Runnable() {
+ public void run() {
+ try {
+ int maxAppendAttempts = 20;
+ int appendCount = 0;
+ while (appendCount < maxAppendAttempts) {
+ appendFile(path, 1000);
+ Thread.sleep(200);
+ appendCount++;
+ }
+ } catch (IOException | InterruptedException e) {
+ LOG.error("Exception encountered ", e);
+ Assert.fail("Test failed: " + e.getMessage());
Review comment:
Complete stack trace is already printed using logger.
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