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The following commit(s) were added to refs/heads/branch-2.0 by this push:
new 2e5fb94d03b [opt](rowcount) refresh external table's rowcount async
(#32997) (#32998)
2e5fb94d03b is described below
commit 2e5fb94d03bd1de832608fd83449d8d883dda32a
Author: Mingyu Chen <[email protected]>
AuthorDate: Mon Apr 1 11:28:20 2024 +0800
[opt](rowcount) refresh external table's rowcount async (#32997) (#32998)
bp #32997
---
.../doris/datasource/ExternalMetaCacheMgr.java | 3 +-
.../doris/datasource/ExternalRowCountCache.java | 13 ++-
.../datasource/ExternalRowCountCacheTest.java | 100 +++++++++++++++++++++
3 files changed, 111 insertions(+), 5 deletions(-)
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalMetaCacheMgr.java
b/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalMetaCacheMgr.java
index 1492392ee67..c8cafeb990e 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalMetaCacheMgr.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalMetaCacheMgr.java
@@ -68,7 +68,8 @@ public class ExternalMetaCacheMgr {
"ExternalMetaCacheMgr", 120, true);
hudiPartitionMgr = HudiPartitionMgr.get(executor);
fsCache = new FileSystemCache(executor);
- rowCountCache = new ExternalRowCountCache(executor);
+ rowCountCache = new ExternalRowCountCache(executor,
+ Config.external_cache_expire_time_minutes_after_access * 60,
null);
icebergMetadataCacheMgr = new IcebergMetadataCacheMgr();
maxComputeMetadataCacheMgr = new MaxComputeMetadataCacheMgr();
}
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalRowCountCache.java
b/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalRowCountCache.java
index 1441efa9bf5..632cde1d5a7 100644
---
a/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalRowCountCache.java
+++
b/fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalRowCountCache.java
@@ -24,6 +24,7 @@ import org.apache.doris.statistics.util.StatisticsUtil;
import com.github.benmanes.caffeine.cache.AsyncLoadingCache;
import com.github.benmanes.caffeine.cache.Caffeine;
+import lombok.Getter;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
@@ -37,14 +38,19 @@ public class ExternalRowCountCache {
private static final Logger LOG =
LogManager.getLogger(ExternalRowCountCache.class);
private final AsyncLoadingCache<RowCountKey, Optional<Long>> rowCountCache;
- public ExternalRowCountCache(ExecutorService executor) {
+ public ExternalRowCountCache(ExecutorService executor, long
refreshAfterWriteSeconds,
+ BasicAsyncCacheLoader<RowCountKey, Optional<Long>> loader) {
+ // 1. set expireAfterWrite to 1 day, avoid too many entries
+ // 2. set refreshAfterWrite to 10min(default), so that the cache will
be refreshed after 10min
rowCountCache = Caffeine.newBuilder()
.maximumSize(Config.max_external_table_row_count_cache_num)
-
.expireAfterWrite(Duration.ofMinutes(Config.external_cache_expire_time_minutes_after_access))
+ .expireAfterAccess(Duration.ofDays(1))
+
.refreshAfterWrite(Duration.ofSeconds(refreshAfterWriteSeconds))
.executor(executor)
- .buildAsync(new RowCountCacheLoader());
+ .buildAsync(loader == null ? new RowCountCacheLoader() :
loader);
}
+ @Getter
public static class RowCountKey {
private final long catalogId;
private final long dbId;
@@ -74,7 +80,6 @@ public class ExternalRowCountCache {
}
public static class RowCountCacheLoader extends
BasicAsyncCacheLoader<RowCountKey, Optional<Long>> {
-
@Override
protected Optional<Long> doLoad(RowCountKey rowCountKey) {
try {
diff --git
a/fe/fe-core/src/test/java/org/apache/doris/datasource/ExternalRowCountCacheTest.java
b/fe/fe-core/src/test/java/org/apache/doris/datasource/ExternalRowCountCacheTest.java
new file mode 100644
index 00000000000..e8622f6b59a
--- /dev/null
+++
b/fe/fe-core/src/test/java/org/apache/doris/datasource/ExternalRowCountCacheTest.java
@@ -0,0 +1,100 @@
+// 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.doris.datasource;
+
+import org.apache.doris.datasource.ExternalRowCountCache.RowCountKey;
+import org.apache.doris.statistics.BasicAsyncCacheLoader;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.Optional;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.atomic.AtomicLong;
+
+public class ExternalRowCountCacheTest {
+ private ExternalRowCountCache cache;
+ private ExecutorService executorService;
+
+ public static class TestLoader extends BasicAsyncCacheLoader<RowCountKey,
Optional<Long>> {
+
+ private AtomicLong incr = new AtomicLong(333);
+
+ @Override
+ protected Optional<Long> doLoad(RowCountKey rowCountKey) {
+ if (rowCountKey.getTableId() == 1) {
+ return Optional.of(111L);
+ } else if (rowCountKey.getTableId() == 2) {
+ return Optional.of(222L);
+ } else if (rowCountKey.getTableId() == 3) {
+ try {
+ Thread.sleep(1000);
+ } catch (InterruptedException e) {
+ throw new RuntimeException(e);
+ }
+ System.out.println("load: " + incr.get());
+ return Optional.of(incr.incrementAndGet());
+ }
+ return Optional.empty();
+ }
+ }
+
+ @BeforeEach
+ public void setUp() {
+ executorService = Executors.newFixedThreadPool(2);
+ cache = new ExternalRowCountCache(executorService, 2, new
TestLoader());
+ }
+
+ @Test
+ public void test() throws Exception {
+ // table 1
+ long rowCount = cache.getCachedRowCount(1, 1, 1);
+ Assertions.assertEquals(0, rowCount);
+ Thread.sleep(1000);
+ rowCount = cache.getCachedRowCount(1, 1, 1);
+ Assertions.assertEquals(111, rowCount);
+
+ // table 2
+ rowCount = cache.getCachedRowCount(1, 1, 2);
+ Assertions.assertEquals(0, rowCount);
+ Thread.sleep(1000);
+ rowCount = cache.getCachedRowCount(1, 1, 2);
+ Assertions.assertEquals(222, rowCount);
+
+ // table 3
+ rowCount = cache.getCachedRowCount(1, 1, 3);
+ // first get, it should be 0 because the loader is async
+ Assertions.assertEquals(0, rowCount);
+ // After sleep 2 sec and then get, it should be 1
+ Thread.sleep(2000);
+ rowCount = cache.getCachedRowCount(1, 1, 3);
+ Assertions.assertEquals(334, rowCount);
+ // sleep 3 sec to trigger refresh
+ Thread.sleep(3000);
+ rowCount = cache.getCachedRowCount(1, 1, 3);
+ // the refresh will be triggered only when query it, so it should
still be 1
+ Assertions.assertEquals(334, rowCount);
+ // sleep 2 sec to wait for the doLoad
+ Thread.sleep(2000);
+ rowCount = cache.getCachedRowCount(1, 1, 3);
+ // refresh done, value should be 2
+ Assertions.assertEquals(335, rowCount);
+ }
+}
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