lurnagao-dahua commented on code in PR #10661:
URL: https://github.com/apache/iceberg/pull/10661#discussion_r1670390955
##########
mr/src/main/java/org/apache/iceberg/mr/mapreduce/IcebergInputFormat.java:
##########
@@ -144,21 +147,32 @@ public List<InputSplit> getSplits(JobContext context) {
InputFormatConfig.InMemoryDataModel model =
conf.getEnum(
InputFormatConfig.IN_MEMORY_DATA_MODEL,
InputFormatConfig.InMemoryDataModel.GENERIC);
- try (CloseableIterable<CombinedScanTask> tasksIterable = scan.planTasks())
{
- Table serializableTable = SerializableTable.copyOf(table);
- tasksIterable.forEach(
- task -> {
- if (applyResidual
- && (model == InputFormatConfig.InMemoryDataModel.HIVE
- || model == InputFormatConfig.InMemoryDataModel.PIG)) {
- // TODO: We do not support residual evaluation for HIVE and PIG
in memory data model
- // yet
- checkResiduals(task);
- }
- splits.add(new IcebergSplit(serializableTable, conf, task));
- });
- } catch (IOException e) {
- throw new UncheckedIOException(String.format("Failed to close table
scan: %s", scan), e);
+ final ExecutorService workerPool =
+ ThreadPools.newWorkerPool(
+ "iceberg-plan-worker-pool",
+ conf.getInt(
+ SystemConfigs.WORKER_THREAD_POOL_SIZE.propertyKey(),
+ ThreadPools.WORKER_THREAD_POOL_SIZE));
+ try {
+ scan = scan.planWith(workerPool);
Review Comment:
> Looks good! After this change, each fetch task will new its own thread
pool, so the ugi problem is gone.
>
> But it would be good if you can try to add a unit test.
Hi, Thank you for your reply!
May I ask if you can give me some advice on writing unit test.
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