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https://issues.apache.org/jira/browse/HDFS-13909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16817348#comment-16817348
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Íñigo Goiri commented on HDFS-13909:
------------------------------------
That's exactly the point of {{RemoteMethod}}.
In the call, you do:
{code}
RemoteMethod method = new RemoteMethod("addCacheDirective",
new Class<?>[] {CacheDirectiveInfo.class, EnumSet.class},
new RemoteParam(), flags);
{code}
And then extend {{RemoteMethod}} to do something like:
{code}
public Object[] getParams(RemoteLocationContext context) {
if (this.params == null) {
return new Object[] {};
}
Object[] objList = new Object[this.params.length];
for (int i = 0; i < this.params.length; i++) {
Object currentObj = this.params[i];
if (currentObj instanceof RemoteParam) {
RemoteParam paramGetter = (RemoteParam) currentObj;
// Map the parameter using the context
if (this.types[i] == CacheDirectiveInfo.class) {
String path = (String)paramGetter.getParameterForContext(context);
objList[i] = CacheDirectiveInfo.Builder(path)
.setPath(new Path(path))
.build();
} else {
objList[i] = paramGetter.getParameterForContext(context);
}
} else {
objList[i] = currentObj;
}
}
return objList;
}
{code}
> RBF: Add Cache pools and directives related ClientProtocol apis
> ---------------------------------------------------------------
>
> Key: HDFS-13909
> URL: https://issues.apache.org/jira/browse/HDFS-13909
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Dibyendu Karmakar
> Assignee: Ayush Saxena
> Priority: Major
> Attachments: HDFS-13909-HDFS-13891-01.patch,
> HDFS-13909-HDFS-13891-02.patch
>
>
> Currently addCachePool, modifyCachePool, removeCachePool, listCachePools,
> addCacheDirective, modifyCacheDirective, removeCacheDirective,
> listCacheDirectives these APIs are not implemented in Router.
> This JIRA is intend to implement above mentioned APIs.
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