loukey-lj commented on a change in pull request #2434:
URL: https://github.com/apache/hudi/pull/2434#discussion_r556285084
##########
File path:
hudi-flink/src/main/java/org/apache/hudi/operator/InstantGenerateOperator.java
##########
@@ -222,4 +234,59 @@ public void close() throws Exception {
fs.close();
}
}
+
+ private boolean checkReceivedData(long checkpointId) throws
InterruptedException, IOException {
+ int numberOfParallelSubtasks =
getRuntimeContext().getNumberOfParallelSubtasks();
+ FileStatus[] fileStatuses = null;
+ Path generatePath = new Path(INSTANT_GENERATE_FOLDER_NAME);
+ int tryTimes = 1;
+ // waiting all subtask create generate file ready
+ while (true) {
+ Thread.sleep(500L);
+ fileStatuses = fs.listStatus(generatePath, new PathFilter() {
+ @Override
+ public boolean accept(Path pathname) {
+ return
pathname.getName().contains(String.format("_%d_",checkpointId));
+ }
+ });
+
+ // is ready
+ if (fileStatuses != null && fileStatuses.length ==
numberOfParallelSubtasks) {
+ break;
+ }
+
+ if (tryTimes >= 5) {
+ LOG.warn("waiting generate file, checkpointId [{}]",checkpointId);
+ tryTimes = 0;
+ }
+ }
+
+ boolean hasData = false;
+ // judge whether has data in this checkpoint and delete tmp file.
+ for (FileStatus fileStatus : fileStatuses) {
+ Path path = fileStatus.getPath();
+ String name = path.getName();
+ // has data
+ if (Long.parseLong(name.split(UNDERLINE)[2]) > 0) {
+ hasData = true;
+ break;
+ }
+ }
+
+ // delete all tmp file
+ fileStatuses = fs.listStatus(generatePath);
+ for (FileStatus fileStatus : fileStatuses) {
+ fs.delete(fileStatus.getPath());
+ }
+
+ return hasData;
+ }
+
+ private void createinstantGenerateTmpFolder() throws IOException {
Review comment:
ok
##########
File path:
hudi-flink/src/main/java/org/apache/hudi/operator/InstantGenerateOperator.java
##########
@@ -222,4 +234,59 @@ public void close() throws Exception {
fs.close();
}
}
+
+ private boolean checkReceivedData(long checkpointId) throws
InterruptedException, IOException {
+ int numberOfParallelSubtasks =
getRuntimeContext().getNumberOfParallelSubtasks();
+ FileStatus[] fileStatuses = null;
+ Path generatePath = new Path(INSTANT_GENERATE_FOLDER_NAME);
+ int tryTimes = 1;
+ // waiting all subtask create generate file ready
+ while (true) {
+ Thread.sleep(500L);
+ fileStatuses = fs.listStatus(generatePath, new PathFilter() {
+ @Override
+ public boolean accept(Path pathname) {
+ return
pathname.getName().contains(String.format("_%d_",checkpointId));
+ }
+ });
+
+ // is ready
+ if (fileStatuses != null && fileStatuses.length ==
numberOfParallelSubtasks) {
+ break;
+ }
+
+ if (tryTimes >= 5) {
+ LOG.warn("waiting generate file, checkpointId [{}]",checkpointId);
+ tryTimes = 0;
+ }
+ }
+
+ boolean hasData = false;
Review comment:
ok
##########
File path:
hudi-flink/src/main/java/org/apache/hudi/operator/InstantGenerateOperator.java
##########
@@ -102,65 +106,73 @@ public void open() throws Exception {
// Hadoop FileSystem
fs = FSUtils.getFs(cfg.targetBasePath, serializableHadoopConf.get());
- TaskContextSupplier taskContextSupplier = new
FlinkTaskContextSupplier(null);
+ if (isMain) {
+ TaskContextSupplier taskContextSupplier = new
FlinkTaskContextSupplier(null);
- // writeClient
- writeClient = new HoodieFlinkWriteClient(new
HoodieFlinkEngineContext(taskContextSupplier),
StreamerUtil.getHoodieClientConfig(cfg), true);
+ // writeClient
+ writeClient = new HoodieFlinkWriteClient(new
HoodieFlinkEngineContext(taskContextSupplier),
StreamerUtil.getHoodieClientConfig(cfg), true);
- // init table, create it if not exists.
- initTable();
+ // init table, create it if not exists.
+ initTable();
+
+ // create instantGenerateTmpFolder
+ createinstantGenerateTmpFolder();
+ }
}
@Override
public void prepareSnapshotPreBarrier(long checkpointId) throws Exception {
super.prepareSnapshotPreBarrier(checkpointId);
- // check whether the last instant is completed, if not, wait 10s and then
throws an exception
- if (!StringUtils.isNullOrEmpty(latestInstant)) {
- doCheck();
- // last instant completed, set it empty
- latestInstant = "";
- }
+ int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();
+ String instantGenerateInfoFileName =
String.format("%d_%d_%d",indexOfThisSubtask,checkpointId,batchSize);
+ Path path = new
Path(INSTANT_GENERATE_FOLDER_NAME,instantGenerateInfoFileName);
+ // mk generate file by each subtask
+ fs.create(path,true);
+ LOG.info("subtask [{}] at checkpoint [{}] created generate file
[{}]",indexOfThisSubtask,checkpointId,instantGenerateInfoFileName);
+ if (isMain) {
+ boolean receivedDataInCurrentCP = checkReceivedData(checkpointId);
+ // check whether the last instant is completed, if not, wait 10s and
then throws an exception
+ if (!StringUtils.isNullOrEmpty(latestInstant)) {
+ doCheck();
+ // last instant completed, set it empty
+ latestInstant = "";
+ }
- // no data no new instant
- if (!bufferedRecords.isEmpty()) {
- latestInstant = startNewInstant(checkpointId);
+ // no data no new instant
+ if (receivedDataInCurrentCP) {
+ latestInstant = startNewInstant(checkpointId);
+ }
}
}
@Override
public void initializeState(StateInitializationContext context) throws
Exception {
- // instantState
- ListStateDescriptor<String> latestInstantStateDescriptor = new
ListStateDescriptor<String>("latestInstant", String.class);
- latestInstantState =
context.getOperatorStateStore().getListState(latestInstantStateDescriptor);
-
- // recordState
- ListStateDescriptor<StreamRecord> recordsStateDescriptor = new
ListStateDescriptor<StreamRecord>("recordsState", StreamRecord.class);
- recordsState =
context.getOperatorStateStore().getListState(recordsStateDescriptor);
-
- if (context.isRestored()) {
- Iterator<String> latestInstantIterator =
latestInstantState.get().iterator();
- latestInstantIterator.forEachRemaining(x -> latestInstant = x);
- LOG.info("InstantGenerateOperator initializeState get latestInstant
[{}]", latestInstant);
-
- Iterator<StreamRecord> recordIterator = recordsState.get().iterator();
- bufferedRecords.clear();
- recordIterator.forEachRemaining(x -> bufferedRecords.add(x));
+ isMain = getRuntimeContext().getIndexOfThisSubtask() == 0;
+ if (isMain) {
+ // instantState
+ ListStateDescriptor<String> latestInstantStateDescriptor = new
ListStateDescriptor<String>("latestInstant", String.class);
+ latestInstantState =
context.getOperatorStateStore().getListState(latestInstantStateDescriptor);
+
+ if (context.isRestored()) {
+ Iterator<String> latestInstantIterator =
latestInstantState.get().iterator();
+ latestInstantIterator.forEachRemaining(x -> latestInstant = x);
+ LOG.info("InstantGenerateOperator initializeState get latestInstant
[{}]", latestInstant);
Review comment:
ok
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