morningman commented on code in PR #51185:
URL: https://github.com/apache/doris/pull/51185#discussion_r2113607866
##########
fe/fe-core/src/main/java/org/apache/doris/datasource/iceberg/source/IcebergScanNode.java:
##########
@@ -229,19 +231,21 @@ public void startSplit(int numBackends) throws
UserException {
public void doStartSplit() {
TableScan scan = createTableScan();
CompletableFuture.runAsync(() -> {
+ AtomicReference<CloseableIterable<FileScanTask>> taskRef = new
AtomicReference<>();
try {
preExecutionAuthenticator.execute(
() -> {
CloseableIterable<FileScanTask> fileScanTasks =
planFileScanTask(scan);
-
- // 1. this task should stop when all splits are
assigned
- // 2. if we want to stop this plan, we can close
the fileScanTasks to stop
- splitAssignment.addCloseable(fileScanTasks);
-
- fileScanTasks.forEach(fileScanTask ->
-
splitAssignment.addToQueue(Lists.newArrayList(createIcebergSplit(fileScanTask))));
-
- return null;
+ taskRef.set(planFileScanTask(scan));
Review Comment:
BTW, the `threadPoolWithPreAuth` in `ExternalCatalog.java` is only used in
##########
fe/fe-core/src/main/java/org/apache/doris/datasource/iceberg/source/IcebergScanNode.java:
##########
@@ -229,19 +231,21 @@ public void startSplit(int numBackends) throws
UserException {
public void doStartSplit() {
TableScan scan = createTableScan();
CompletableFuture.runAsync(() -> {
+ AtomicReference<CloseableIterable<FileScanTask>> taskRef = new
AtomicReference<>();
try {
preExecutionAuthenticator.execute(
() -> {
CloseableIterable<FileScanTask> fileScanTasks =
planFileScanTask(scan);
-
- // 1. this task should stop when all splits are
assigned
- // 2. if we want to stop this plan, we can close
the fileScanTasks to stop
- splitAssignment.addCloseable(fileScanTasks);
-
- fileScanTasks.forEach(fileScanTask ->
-
splitAssignment.addToQueue(Lists.newArrayList(createIcebergSplit(fileScanTask))));
-
- return null;
+ taskRef.set(planFileScanTask(scan));
Review Comment:
You call `planFileScanTask()` twice?
##########
fe/fe-core/src/main/java/org/apache/doris/datasource/SplitAssignment.java:
##########
@@ -100,10 +108,22 @@ private void appendBatch(Multimap<Backend, Split> batch)
throws UserException {
for (Split split : splits) {
locations.add(splitToScanRange.getScanRange(backend,
locationProperties, split, pathPartitionKeys));
}
- try {
- assignment.computeIfAbsent(backend, be -> new
LinkedBlockingQueue<>(10000)).put(locations);
- } catch (Exception e) {
- throw new UserException("Failed to offer batch split", e);
+ while (true) {
+ BlockingQueue<Collection<TScanRangeLocations>> queue =
+ assignment.computeIfAbsent(backend, be -> new
LinkedBlockingQueue<>(10000));
+ try {
+ if (queue.offer(locations, 100, TimeUnit.MILLISECONDS)) {
+ return;
+ }
+ } catch (InterruptedException e) {
+ throw new UserException("Failed to offer batch split by
interrupted", e);
+ }
+ if (needMoreSplit()) {
Review Comment:
This logic is wrong
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