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Posted to commits@hudi.apache.org by "1032851561 (via GitHub)" <gi...@apache.org> on 2023/04/07 10:28:52 UTC
[GitHub] [hudi] 1032851561 opened a new pull request, #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
1032851561 opened a new pull request, #8404:
URL: https://github.com/apache/hudi/pull/8404
description： https://github.com/apache/hudi/issues/8087
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[GitHub] [hudi] danny0405 commented on a diff in pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
Posted by "danny0405 (via GitHub)" <gi...@apache.org>.
danny0405 commented on code in PR #8404:
URL: https://github.com/apache/hudi/pull/8404#discussion_r1161556062
##########
hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/source/SplitProcessThread.java:
##########
@@ -0,0 +1,127 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.hudi.source;
+
+import org.apache.flink.streaming.api.functions.source.SourceFunction;
+import org.apache.flink.table.data.RowData;
+import org.apache.flink.util.function.ThrowingRunnable;
+import org.apache.hudi.adapter.MailboxExecutorAdapter;
+import org.apache.hudi.adapter.RateLimiterAdapter;
+import org.apache.hudi.common.util.Option;
+import org.apache.hudi.configuration.FlinkOptions;
+import org.apache.hudi.table.format.mor.MergeOnReadInputFormat;
+import org.apache.hudi.table.format.mor.MergeOnReadInputSplit;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.IOException;
+import java.util.Queue;
+
+/**
+ * A separate thread to process splits. Can control read rate by FlinkOptions.READ_RATE_LIMIT
+ */
+public class SplitProcessThread extends Thread {
+
+ private static final Logger LOG = LoggerFactory.getLogger(SplitProcessThread.class);
+ private volatile boolean running = true;
+ private transient Queue<MergeOnReadInputSplit> splits;
+
+ private final MailboxExecutorAdapter executor;
+
+ private MergeOnReadInputFormat format;
+
+ private transient SourceFunction.SourceContext<RowData> sourceContext;
+
+ private transient ThrowingRunnable<? extends Exception> exceptionHandler;
+ private transient Option<RateLimiterAdapter> rateLimiter;
+
+ public SplitProcessThread(Queue<MergeOnReadInputSplit> splits, MailboxExecutorAdapter executor, MergeOnReadInputFormat format,
+ SourceFunction.SourceContext<RowData> sourceContext, ThrowingRunnable<? extends Exception> exceptionHandler,
+ int indexOfThisSubtask, int numberOfParallelSubtasks) {
+ setName(String.format("split-process-thread (%s/%s)", indexOfThisSubtask + 1, numberOfParallelSubtasks));
+ this.splits = splits;
+ this.executor = executor;
+ this.format = format;
+ this.sourceContext = sourceContext;
+ this.exceptionHandler = exceptionHandler;
+ long rate = format.getConf().getLong(FlinkOptions.READ_RATE_LIMIT);
+ this.rateLimiter = rate > 0 ? Option.of(RateLimiterAdapter.create(rate)) : Option.empty();
+ }
+
+ @Override
+ public void run() {
+ while (running) {
Review Comment:
We lost the exactly-once semantics if the consumption is taking place in another thread, that is, when the checkpoint barrier passed by, the consumption offset is not managed synchonously within the state-backend, we consume like 2048 records per-batch, and the discrepancy can be within range [0, 2048].
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[GitHub] [hudi] hudi-bot commented on pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
Posted by "hudi-bot (via GitHub)" <gi...@apache.org>.
hudi-bot commented on PR #8404:
URL: https://github.com/apache/hudi/pull/8404#issuecomment-1500193330
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## CI report:
* 2576819a6496fc9ca9dc47205453c43bd76c1a44 Azure: [PENDING](https://dev.azure.com/apache-hudi-ci-org/785b6ef4-2f42-4a89-8f0e-5f0d7039a0cc/_build/results?buildId=16190)
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Re: [PR] [HUDI-6049] split_reader don't checkpoint before consuming all splits [hudi]
Posted by "1032851561 (via GitHub)" <gi...@apache.org>.
1032851561 closed pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
URL: https://github.com/apache/hudi/pull/8404
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[GitHub] [hudi] SteNicholas commented on a diff in pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
Posted by "SteNicholas (via GitHub)" <gi...@apache.org>.
SteNicholas commented on code in PR #8404:
URL: https://github.com/apache/hudi/pull/8404#discussion_r1161531119
##########
hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/configuration/FlinkOptions.java:
##########
@@ -339,6 +339,12 @@ private FlinkOptions() {
.withDescription("Enables data-skipping allowing queries to leverage indexes to reduce the search space by"
+ "skipping over files");
+ public static final ConfigOption<Long> READ_RATE_LIMIT = ConfigOptions
+ .key("read.rate.limit")
Review Comment:
Could it support dynamic adjustment?
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[GitHub] [hudi] hudi-bot commented on pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
Posted by "hudi-bot (via GitHub)" <gi...@apache.org>.
hudi-bot commented on PR #8404:
URL: https://github.com/apache/hudi/pull/8404#issuecomment-1500187376
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## CI report:
* 2576819a6496fc9ca9dc47205453c43bd76c1a44 UNKNOWN
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[GitHub] [hudi] hudi-bot commented on pull request #8404: [HUDI-6049] split_reader don't checkpoint before consuming all splits
Posted by "hudi-bot (via GitHub)" <gi...@apache.org>.
hudi-bot commented on PR #8404:
URL: https://github.com/apache/hudi/pull/8404#issuecomment-1500366776
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## CI report:
* 2576819a6496fc9ca9dc47205453c43bd76c1a44 Azure: [FAILURE](https://dev.azure.com/apache-hudi-ci-org/785b6ef4-2f42-4a89-8f0e-5f0d7039a0cc/_build/results?buildId=16190)
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