Hexiaoqiao commented on a change in pull request #4085: URL: https://github.com/apache/hadoop/pull/4085#discussion_r835904896
########## File path: hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestFsDatasetImpl.java ########## @@ -602,6 +606,54 @@ public void run() {} + "volumeMap.", 0, totalNumReplicas); } + @Test(timeout = 30000) + public void testConcurrentWriteAndDeleteBlock() throws Exception { + // Feed FsDataset with block metadata. + final int numBlocks = 1000; + final int threadCount = 10; + // Generate data blocks. + ExecutorService pool = Executors.newFixedThreadPool(threadCount); + List<Future<?>> futureList = new ArrayList<>(); + Random random = new Random(); + // Random write block and delete half of them. + for (int i = 0; i < threadCount; i++) { + Thread thread = new Thread() { + @Override + public void run() { + try { + String bpid = BLOCK_POOL_IDS[random.nextInt(BLOCK_POOL_IDS.length)]; + for (int blockId = 0; blockId < numBlocks; blockId++) { + ExtendedBlock eb = new ExtendedBlock(bpid, blockId); + ReplicaHandler replica = null; + try { + replica = dataset.createRbw(StorageType.DEFAULT, null, eb, + false); + if (blockId % 2 > 0) { + dataset.invalidate(bpid, new Block[]{eb.getLocalBlock()}); + } + } finally { + if (replica != null) { + replica.close(); + } + } + } + } catch (Exception e) { + e.printStackTrace(); Review comment: If this is not expected, It is good choice to fail this unit test rather than only log IMO, just like following demo. `fail("Exception while testing testConcurrentWriteAndDeleteBlock.");` Other part looks good to me. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org