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https://issues.apache.org/jira/browse/HDFS-17651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17913998#comment-17913998
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ASF GitHub Bot commented on HDFS-17651:
---------------------------------------
hfutatzhanghb commented on code in PR #7244:
URL: https://github.com/apache/hadoop/pull/7244#discussion_r1919727057
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/resources/hdfs-rbf-default.xml:
##########
@@ -49,13 +49,39 @@
</property>
<property>
- <name>dfs.federation.router.rpc.async.enable</name>
+ <name>dfs.federation.router.async.rpc.enable</name>
<value>false</value>
<description>
If true, router will process the RPC request asynchronously.
</description>
</property>
+ <property>
+ <name>dfs.federation.router.async.rpc.ns.handler.count</name>
+ <value>nsPlaceholder1:0,nsPlaceholder2:0</value>
Review Comment:
fixed. Thanks.
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RBFConfigKeys.java:
##########
@@ -72,15 +72,23 @@ public class RBFConfigKeys extends
CommonConfigurationKeysPublic {
public static final String DFS_ROUTER_RPC_ENABLE =
FEDERATION_ROUTER_PREFIX + "rpc.enable";
public static final boolean DFS_ROUTER_RPC_ENABLE_DEFAULT = true;
- public static final String DFS_ROUTER_RPC_ENABLE_ASYNC =
- FEDERATION_ROUTER_PREFIX + "rpc.async.enable";
- public static final boolean DFS_ROUTER_RPC_ENABLE_ASYNC_DEFAULT = false;
- public static final String DFS_ROUTER_RPC_ASYNC_HANDLER_COUNT =
- FEDERATION_ROUTER_PREFIX + "rpc.async.handler.count";
- public static final int DFS_ROUTER_RPC_ASYNC_HANDLER_COUNT_DEFAULT = 2;
- public static final String DFS_ROUTER_RPC_ASYNC_RESPONDER_COUNT =
- FEDERATION_ROUTER_PREFIX + "rpc.async.responder.count";
- public static final int DFS_ROUTER_RPC_ASYNC_RESPONDER_COUNT_DEFAULT = 10;
+ // HDFS Router Asynchronous RPC
+ public static final String DFS_ROUTER_ASYNC_RPC_ENABLE_KEY =
+ FEDERATION_ROUTER_PREFIX + "async.rpc.enable";
+ public static final boolean DFS_ROUTER_ASYNC_RPC_ENABLE_DEFAULT = false;
+ public static final String FEDERATION_ROUTER_ASYNC_RPC_PREFIX =
+ FEDERATION_ROUTER_PREFIX + "async.rpc.";
+ // Example: ns1:count1,ns2:count2,ns3:count3
+ public static final String DFS_ROUTER_ASYNC_RPC_NS_HANDLER_COUNT_KEY =
+ FEDERATION_ROUTER_ASYNC_RPC_PREFIX + "ns.handler.count";
+ public static final String DFS_ROUTER_ASYNC_RPC_NS_HANDLER_COUNT_DEFAULT =
Review Comment:
Fixed.
> [ARR] Async handler executor isolation.
> ---------------------------------------
>
> Key: HDFS-17651
> URL: https://issues.apache.org/jira/browse/HDFS-17651
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Major
> Labels: pull-request-available
>
> The main purpose of this PR is to isolate each nameservice by letting each
> nameservice has its own async handler thread pool.
> Think below situation:
> When a downstream nameserivce ns1 has poor performance, the threads in async
> handler thread pool will be occupied adding calls to the ns1's
> Connection#calls. There will be no available threads to handle normal
> nameservice's rpc request asynchronously. Therefore, it is better to isolate
> the async handler thread pool of different nameservices.
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