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https://issues.apache.org/jira/browse/HDFS-14442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17018649#comment-17018649
 ] 

Hadoop QA commented on HDFS-14442:
----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
51s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 19m 
46s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
0s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
43s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
6s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
14m 22s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
15s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
14s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
 1s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
38s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
2s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
13m 36s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m 
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m 
12s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}106m 45s{color} 
| {color:red} hadoop-hdfs in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
31s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}169m 15s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.hdfs.server.datanode.TestNNHandlesCombinedBlockReport |
|   | hadoop.hdfs.TestDFSInputStream |
|   | hadoop.hdfs.server.namenode.TestRedudantBlocks |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.5 Server=19.03.5 Image:yetus/hadoop:c44943d1fc3 |
| JIRA Issue | HDFS-14442 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12989501/HDFS-14442.004.patch |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 663e49602353 4.15.0-74-generic #84-Ubuntu SMP Thu Dec 19 
08:06:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 263413e |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_232 |
| findbugs | v3.1.0-RC1 |
| unit | 
https://builds.apache.org/job/PreCommit-HDFS-Build/28694/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/28694/testReport/ |
| Max. process+thread count | 2991 (vs. ulimit of 5500) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/28694/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Disagreement between HAUtil.getAddressOfActive and 
> RpcInvocationHandler.getConnectionId
> ---------------------------------------------------------------------------------------
>
>                 Key: HDFS-14442
>                 URL: https://issues.apache.org/jira/browse/HDFS-14442
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.3.0
>            Reporter: Erik Krogen
>            Assignee: Ravuri Sushma sree
>            Priority: Major
>         Attachments: HDFS-14442.001.patch, HDFS-14442.002.patch, 
> HDFS-14442.003.patch, HDFS-14442.004.patch
>
>
> While working on HDFS-14245, we noticed a discrepancy in some proxy-handling 
> code.
> The description of {{RpcInvocationHandler.getConnectionId()}} states:
> {code}
>   /**
>    * Returns the connection id associated with the InvocationHandler instance.
>    * @return ConnectionId
>    */
>   ConnectionId getConnectionId();
> {code}
> It does not make any claims about whether this connection ID will be an 
> active proxy or not. Yet in {{HAUtil}} we have:
> {code}
>   /**
>    * Get the internet address of the currently-active NN. This should rarely 
> be
>    * used, since callers of this method who connect directly to the NN using 
> the
>    * resulting InetSocketAddress will not be able to connect to the active NN 
> if
>    * a failover were to occur after this method has been called.
>    * 
>    * @param fs the file system to get the active address of.
>    * @return the internet address of the currently-active NN.
>    * @throws IOException if an error occurs while resolving the active NN.
>    */
>   public static InetSocketAddress getAddressOfActive(FileSystem fs)
>       throws IOException {
>     if (!(fs instanceof DistributedFileSystem)) {
>       throw new IllegalArgumentException("FileSystem " + fs + " is not a 
> DFS.");
>     }
>     // force client address resolution.
>     fs.exists(new Path("/"));
>     DistributedFileSystem dfs = (DistributedFileSystem) fs;
>     DFSClient dfsClient = dfs.getClient();
>     return RPC.getServerAddress(dfsClient.getNamenode());
>   }
> {code}
> Where the call {{RPC.getServerAddress()}} eventually terminates into 
> {{RpcInvocationHandler#getConnectionId()}}, via {{RPC.getServerAddress()}} -> 
> {{RPC.getConnectionIdForProxy()}} -> 
> {{RpcInvocationHandler#getConnectionId()}}. {{HAUtil}} appears to be making 
> an incorrect assumption that {{RpcInvocationHandler}} will necessarily return 
> an _active_ connection ID. {{ObserverReadProxyProvider}} demonstrates a 
> counter-example to this, since the current connection ID may be pointing at, 
> for example, an Observer NameNode.



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