[
https://issues.apache.org/jira/browse/KAFKA-7620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16701426#comment-16701426
]
ASF GitHub Bot commented on KAFKA-7620:
---------------------------------------
ewencp closed pull request #5914: KAFKA-7620: Fix restart logic for TTLs in
WorkerConfigTransformer
URL: https://github.com/apache/kafka/pull/5914
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
index efcc01d2c45..8889aadbae1 100644
---
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
+++
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/ConnectorConfig.java
@@ -35,6 +35,7 @@
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
+import java.util.Locale;
import java.util.Map;
import static
org.apache.kafka.common.config.ConfigDef.NonEmptyStringWithoutControlChars.nonEmptyStringWithoutControlChars;
@@ -105,8 +106,8 @@
"indicates that a configuration value will expire in the future.";
private static final String CONFIG_RELOAD_ACTION_DISPLAY = "Reload Action";
- public static final String CONFIG_RELOAD_ACTION_NONE =
Herder.ConfigReloadAction.NONE.toString();
- public static final String CONFIG_RELOAD_ACTION_RESTART =
Herder.ConfigReloadAction.RESTART.toString();
+ public static final String CONFIG_RELOAD_ACTION_NONE =
Herder.ConfigReloadAction.NONE.name().toLowerCase(Locale.ROOT);
+ public static final String CONFIG_RELOAD_ACTION_RESTART =
Herder.ConfigReloadAction.RESTART.name().toLowerCase(Locale.ROOT);
public static final String ERRORS_RETRY_TIMEOUT_CONFIG =
"errors.retry.timeout";
public static final String ERRORS_RETRY_TIMEOUT_DISPLAY = "Retry Timeout
for Errors";
diff --git
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/Herder.java
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/Herder.java
index 5c7cc1429aa..c572e20b52f 100644
--- a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/Herder.java
+++ b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/Herder.java
@@ -148,12 +148,6 @@
*/
void restartTask(ConnectorTaskId id, Callback<Void> cb);
- /**
- * Get the configuration reload action.
- * @param connName name of the connector
- */
- ConfigReloadAction connectorConfigReloadAction(final String connName);
-
/**
* Restart the connector.
* @param connName name of the connector
diff --git
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/WorkerConfigTransformer.java
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/WorkerConfigTransformer.java
index 1b715c70c76..3373d5ce328 100644
---
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/WorkerConfigTransformer.java
+++
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/WorkerConfigTransformer.java
@@ -16,10 +16,15 @@
*/
package org.apache.kafka.connect.runtime;
+import org.apache.kafka.common.config.ConfigDef;
import org.apache.kafka.common.config.provider.ConfigProvider;
import org.apache.kafka.common.config.ConfigTransformer;
import org.apache.kafka.common.config.ConfigTransformerResult;
+import org.apache.kafka.connect.runtime.Herder.ConfigReloadAction;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
@@ -29,6 +34,8 @@
* retrieved TTL values.
*/
public class WorkerConfigTransformer {
+ private static final Logger log =
LoggerFactory.getLogger(WorkerConfigTransformer.class);
+
private final Worker worker;
private final ConfigTransformer configTransformer;
private final ConcurrentMap<String, Map<String, HerderRequest>> requests =
new ConcurrentHashMap<>();
@@ -46,7 +53,16 @@ public WorkerConfigTransformer(Worker worker, Map<String,
ConfigProvider> config
if (configs == null) return null;
ConfigTransformerResult result = configTransformer.transform(configs);
if (connectorName != null) {
- scheduleReload(connectorName, result.ttls());
+ String key = ConnectorConfig.CONFIG_RELOAD_ACTION_CONFIG;
+ String action = (String) ConfigDef.parseType(key,
configs.get(key), ConfigDef.Type.STRING);
+ if (action == null) {
+ // The default action is "restart".
+ action = ConnectorConfig.CONFIG_RELOAD_ACTION_RESTART;
+ }
+ ConfigReloadAction reloadAction =
ConfigReloadAction.valueOf(action.toUpperCase(Locale.ROOT));
+ if (reloadAction == ConfigReloadAction.RESTART) {
+ scheduleReload(connectorName, result.ttls());
+ }
}
return result.data();
}
@@ -58,21 +74,19 @@ private void scheduleReload(String connectorName,
Map<String, Long> ttls) {
}
private void scheduleReload(String connectorName, String path, long ttl) {
- Herder herder = worker.herder();
- if (herder.connectorConfigReloadAction(connectorName) ==
Herder.ConfigReloadAction.RESTART) {
- Map<String, HerderRequest> connectorRequests =
requests.get(connectorName);
- if (connectorRequests == null) {
- connectorRequests = new ConcurrentHashMap<>();
- requests.put(connectorName, connectorRequests);
- } else {
- HerderRequest previousRequest = connectorRequests.get(path);
- if (previousRequest != null) {
- // Delete previous request for ttl which is now stale
- previousRequest.cancel();
- }
+ Map<String, HerderRequest> connectorRequests =
requests.get(connectorName);
+ if (connectorRequests == null) {
+ connectorRequests = new ConcurrentHashMap<>();
+ requests.put(connectorName, connectorRequests);
+ } else {
+ HerderRequest previousRequest = connectorRequests.get(path);
+ if (previousRequest != null) {
+ // Delete previous request for ttl which is now stale
+ previousRequest.cancel();
}
- HerderRequest request = herder.restartConnector(ttl,
connectorName, null);
- connectorRequests.put(path, request);
}
+ log.info("Scheduling a restart of connector {} in {} ms",
connectorName, ttl);
+ HerderRequest request = worker.herder().restartConnector(ttl,
connectorName, null);
+ connectorRequests.put(path, request);
}
}
diff --git
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/DistributedHerder.java
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/DistributedHerder.java
index f2009dbac1e..dc91f356f3d 100644
---
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/DistributedHerder.java
+++
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/DistributedHerder.java
@@ -61,7 +61,6 @@
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
-import java.util.Locale;
import java.util.Map;
import java.util.NavigableSet;
import java.util.NoSuchElementException;
@@ -642,13 +641,6 @@ else if (!configState.contains(connName))
);
}
- @Override
- public ConfigReloadAction connectorConfigReloadAction(final String
connName) {
- return ConfigReloadAction.valueOf(
-
configState.connectorConfig(connName).get(ConnectorConfig.CONFIG_RELOAD_ACTION_CONFIG)
- .toUpperCase(Locale.ROOT));
- }
-
@Override
public void restartConnector(final String connName, final Callback<Void>
callback) {
restartConnector(0, connName, callback);
diff --git
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/standalone/StandaloneHerder.java
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/standalone/StandaloneHerder.java
index 40ad9803a2c..fe31c284613 100644
---
a/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/standalone/StandaloneHerder.java
+++
b/connect/runtime/src/main/java/org/apache/kafka/connect/runtime/standalone/StandaloneHerder.java
@@ -42,7 +42,6 @@
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
-import java.util.Locale;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.Executors;
@@ -260,13 +259,6 @@ public synchronized void restartTask(ConnectorTaskId
taskId, Callback<Void> cb)
cb.onCompletion(new ConnectException("Failed to start task: " +
taskId), null);
}
- @Override
- public ConfigReloadAction connectorConfigReloadAction(final String
connName) {
- return ConfigReloadAction.valueOf(
-
configState.connectorConfig(connName).get(ConnectorConfig.CONFIG_RELOAD_ACTION_CONFIG)
- .toUpperCase(Locale.ROOT));
- }
-
@Override
public synchronized void restartConnector(String connName, Callback<Void>
cb) {
if (!configState.contains(connName))
diff --git
a/connect/runtime/src/test/java/org/apache/kafka/connect/runtime/WorkerConfigTransformerTest.java
b/connect/runtime/src/test/java/org/apache/kafka/connect/runtime/WorkerConfigTransformerTest.java
index b5da2646c3d..e30acb15ed4 100644
---
a/connect/runtime/src/test/java/org/apache/kafka/connect/runtime/WorkerConfigTransformerTest.java
+++
b/connect/runtime/src/test/java/org/apache/kafka/connect/runtime/WorkerConfigTransformerTest.java
@@ -28,9 +28,12 @@
import org.powermock.modules.junit4.PowerMockRunner;
import java.util.Collections;
+import java.util.HashMap;
import java.util.Map;
import java.util.Set;
+import static
org.apache.kafka.connect.runtime.ConnectorConfig.CONFIG_RELOAD_ACTION_CONFIG;
+import static
org.apache.kafka.connect.runtime.ConnectorConfig.CONFIG_RELOAD_ACTION_NONE;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.powermock.api.easymock.PowerMock.replayAll;
@@ -69,18 +72,18 @@ public void testReplaceVariable() {
@Test
public void testReplaceVariableWithTTL() {
EasyMock.expect(worker.herder()).andReturn(herder);
-
EasyMock.expect(herder.connectorConfigReloadAction(MY_CONNECTOR)).andReturn(Herder.ConfigReloadAction.NONE);
replayAll();
- Map<String, String> result = configTransformer.transform(MY_CONNECTOR,
Collections.singletonMap(MY_KEY, "${test:testPath:testKeyWithTTL}"));
- assertEquals(TEST_RESULT_WITH_TTL, result.get(MY_KEY));
+ Map<String, String> props = new HashMap<>();
+ props.put(MY_KEY, "${test:testPath:testKeyWithTTL}");
+ props.put(CONFIG_RELOAD_ACTION_CONFIG, CONFIG_RELOAD_ACTION_NONE);
+ Map<String, String> result = configTransformer.transform(MY_CONNECTOR,
props);
}
@Test
public void testReplaceVariableWithTTLAndScheduleRestart() {
EasyMock.expect(worker.herder()).andReturn(herder);
-
EasyMock.expect(herder.connectorConfigReloadAction(MY_CONNECTOR)).andReturn(Herder.ConfigReloadAction.RESTART);
EasyMock.expect(herder.restartConnector(1L, MY_CONNECTOR,
null)).andReturn(requestId);
replayAll();
@@ -92,11 +95,9 @@ public void testReplaceVariableWithTTLAndScheduleRestart() {
@Test
public void testReplaceVariableWithTTLFirstCancelThenScheduleRestart() {
EasyMock.expect(worker.herder()).andReturn(herder);
-
EasyMock.expect(herder.connectorConfigReloadAction(MY_CONNECTOR)).andReturn(Herder.ConfigReloadAction.RESTART);
EasyMock.expect(herder.restartConnector(1L, MY_CONNECTOR,
null)).andReturn(requestId);
EasyMock.expect(worker.herder()).andReturn(herder);
-
EasyMock.expect(herder.connectorConfigReloadAction(MY_CONNECTOR)).andReturn(Herder.ConfigReloadAction.RESTART);
EasyMock.expectLastCall();
requestId.cancel();
EasyMock.expectLastCall();
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> ConfigProvider is broken for KafkaConnect when TTL is not null
> --------------------------------------------------------------
>
> Key: KAFKA-7620
> URL: https://issues.apache.org/jira/browse/KAFKA-7620
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 2.0.0, 2.0.1
> Reporter: Ye Ji
> Assignee: Robert Yokota
> Priority: Major
> Fix For: 2.2.0, 2.1.1, 2.0.2
>
>
> If the ConfigData returned by ConfigProvider.get implementations has non-null
> and non-negative ttl, it will trigger infinite recursion, here is an excerpt
> of the stack trace:
> {code:java}
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.scheduleReload(WorkerConfigTransformer.java:62)
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.scheduleReload(WorkerConfigTransformer.java:56)
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.transform(WorkerConfigTransformer.java:49)
> at
> org.apache.kafka.connect.runtime.distributed.ClusterConfigState.connectorConfig(ClusterConfigState.java:121)
> at
> org.apache.kafka.connect.runtime.distributed.DistributedHerder.connectorConfigReloadAction(DistributedHerder.java:648)
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.scheduleReload(WorkerConfigTransformer.java:62)
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.scheduleReload(WorkerConfigTransformer.java:56)
> at
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.transform(WorkerConfigTransformer.java:49)
> {code}
> Basically,
> 1) if a non-null ttl is returned from the config provider, connect runtime
> will try to schedule a reload in the future,
> 2) scheduleReload function reads the config again to see if it is a restart
> or not, by calling
> org.apache.kafka.connect.runtime.WorkerConfigTransformer.transform to
> transform the config
> 3) the transform function calls config provider, and gets a non-null ttl,
> causing scheduleReload being called, we are back to step 1.
> To reproduce, simply fork the provided
> [FileConfigProvider|https://github.com/apache/kafka/blob/3cdc78e6bb1f83973a14ce1550fe3874f7348b05/clients/src/main/java/org/apache/kafka/common/config/provider/FileConfigProvider.java],
> and add a non-negative ttl to the ConfigData returned by the get functions.
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