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HDFS-15350. Set dfs.client.failover.random.order to true as default. (#2008)

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Takanobu Asanuma 2020-05-12 23:04:03 +09:00 committed by GitHub
parent 8dad38c0be
commit 928b81a533
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3 changed files with 3 additions and 2 deletions
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2
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/HdfsClientConfigKeys.java
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@ -343,7 +343,7 @@ interface Failover {
PREFIX + "connection.retries.on.timeouts";
int CONNECTION_RETRIES_ON_SOCKET_TIMEOUTS_DEFAULT = 0;
String RANDOM_ORDER = PREFIX + "random.order";
boolean RANDOM_ORDER_DEFAULT = false;
boolean RANDOM_ORDER_DEFAULT = true;
String RESOLVE_ADDRESS_NEEDED_KEY = PREFIX + "resolve-needed";
boolean RESOLVE_ADDRESS_NEEDED_DEFAULT = false;
String RESOLVE_SERVICE_KEY = PREFIX + "resolver.impl";

2
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -4070,7 +4070,7 @@
<property>
<name>dfs.client.failover.random.order</name>
<value>false</value>
<value>true</value>
<description>
Determines if the failover proxies are picked in random order instead of the
configured order. Random order may be enabled for better load balancing

1
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestObserverReadProxyProvider.java
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@ -78,6 +78,7 @@ public void setup() throws Exception {
// transition observer back and forth
conf.setTimeDuration(
OBSERVER_PROBE_RETRY_PERIOD_KEY, 0, TimeUnit.MILLISECONDS);
conf.setBoolean(HdfsClientConfigKeys.Failover.RANDOM_ORDER, false);
}
private void setupProxyProvider(int namenodeCount) throws Exception {