nsivabalan commented on code in PR #5091:
URL: https://github.com/apache/hudi/pull/5091#discussion_r962265102
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hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/client/functional/TestHoodieBackedTableMetadata.java:
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@@ -92,6 +100,52 @@ public void testTableOperations() throws Exception {
verifyBaseMetadataTable();
}
+ @Test
+ public void testMultiReaderForHoodieBackedTableMetadata() throws Exception {
+ final int taskNumber = 100;
+ HoodieTableType tableType = HoodieTableType.COPY_ON_WRITE;
+ init(tableType);
+ testTable.doWriteOperation("000001", INSERT, emptyList(), asList("p1"), 1);
+ HoodieBackedTableMetadata tableMetadata = new
HoodieBackedTableMetadata(context, writeConfig.getMetadataConfig(),
writeConfig.getBasePath(), writeConfig.getSpillableMapBasePath(), false);
+ assertTrue(tableMetadata.enabled());
+ List<String> metadataPartitions = tableMetadata.getAllPartitionPaths();
+ String partition = metadataPartitions.get(0);
+ String finalPartition = basePath + "/" + partition;
+ ArrayList<String> duplicatedPartitions = new ArrayList<>(taskNumber);
+ for (int i = 0; i < taskNumber; i++) {
+ duplicatedPartitions.add(finalPartition);
+ }
+ ExecutorService executors = Executors.newFixedThreadPool(taskNumber);
+ AtomicBoolean flag = new AtomicBoolean(false);
+ AtomicInteger count = new AtomicInteger(0);
+ AtomicInteger filesNumber = new AtomicInteger(0);
+
+ for (String part : duplicatedPartitions) {
+ executors.submit(new Runnable() {
+ @Override
+ public void run() {
+ try {
+ count.incrementAndGet();
+ while (true) {
+ if (count.get() == taskNumber) {
+ break;
+ }
+ }
Review Comment:
should we add a countDownLatch here so that all threads could call
tableMetadata.getAllFilesInPartition() around the same time. that way the test
is deterministic.
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