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https://issues.apache.org/jira/browse/HDFS-15423?focusedWorklogId=536136&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-536136
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ASF GitHub Bot logged work on HDFS-15423:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Jan/21 19:23
Start Date: 14/Jan/21 19:23
Worklog Time Spent: 10m
Work Description: fengnanli commented on a change in pull request #2605:
URL: https://github.com/apache/hadoop/pull/2605#discussion_r557635413
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterWebHdfsMethods.java
##########
@@ -453,21 +456,25 @@ private DatanodeInfo chooseDatanode(final Router router,
final String path, final HttpOpParam.Op op, final long openOffset,
final String excludeDatanodes) throws IOException {
final RouterRpcServer rpcServer = getRPCServer(router);
- DatanodeInfo[] dns = null;
+ DatanodeInfo[] dns = {};
+ String resolvedNs = "";
try {
dns = rpcServer.getCachedDatanodeReport(DatanodeReportType.LIVE);
+ // for simplicity, just take the first remote location to create the file
+ resolvedNs = rpcServer.getLocationsForPath(path, true)
+ .get(0).getNameserviceId();
Review comment:
Actually For 2, I found there is a getCreateLocation inside
RouterRpcServer to get a unique create ns. I will use that to make create in
parity between rpc and http.
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Issue Time Tracking
-------------------
Worklog Id: (was: 536136)
Time Spent: 3h 20m (was: 3h 10m)
> RBF: WebHDFS create shouldn't choose DN from all sub-clusters
> -------------------------------------------------------------
>
> Key: HDFS-15423
> URL: https://issues.apache.org/jira/browse/HDFS-15423
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: rbf, webhdfs
> Reporter: Chao Sun
> Assignee: Fengnan Li
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> In {{RouterWebHdfsMethods}} and for a {{CREATE}} call, {{chooseDatanode}}
> first gets all DNs via {{getDatanodeReport}}, and then randomly pick one from
> the list via {{getRandomDatanode}}. This logic doesn't seem correct as it
> should pick a DN for the specific cluster(s) of the input {{path}}.
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