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From "Aaron T. Myers (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2983) Relax the build version check to permit rolling upgrades within a release
Date Sun, 08 Apr 2012 19:04:23 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aaron T. Myers updated HDFS-2983:
---------------------------------

    Attachment: HDFS-2983.patch

Here's an updated patch which should fix TestNNThroughputBenchmark. The only difference between
this patch and the last is the following:

{noformat}
diff --git hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroug
index 4b8f225..ec5b8a7 100644
--- hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
+++ hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
@@ -58,6 +58,7 @@ import org.apache.hadoop.net.DNS;
 import org.apache.hadoop.net.NetworkTopology;
 import org.apache.hadoop.security.Groups;
 import org.apache.hadoop.util.StringUtils;
+import org.apache.hadoop.util.VersionInfo;
 import org.apache.log4j.Level;
 import org.apache.log4j.LogManager;
 
@@ -783,6 +784,7 @@ public class NNThroughputBenchmark {
       String hostName = DNS.getDefaultHost("default", "default");
       dnRegistration = new DatanodeRegistration(ipAddr, getNodePort(dnIdx));
       dnRegistration.setHostName(hostName);
+      dnRegistration.setSoftwareVersion(VersionInfo.getVersion());
       this.blocks = new ArrayList<Block>(blockCapacity);
       this.nrBlocks = 0;
     }
{noformat}
                
> Relax the build version check to permit rolling upgrades within a release
> -------------------------------------------------------------------------
>
>                 Key: HDFS-2983
>                 URL: https://issues.apache.org/jira/browse/HDFS-2983
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Eli Collins
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-2983.patch, HDFS-2983.patch, HDFS-2983.patch
>
>
> Currently the version check for DN/NN communication is strict (it checks the exact svn
revision or git hash, Storage#getBuildVersion calls VersionInfo#getRevision), which prevents
rolling upgrades across any releases. Once we have the PB-base RPC in place (coming soon to
branch-23) we'll have the necessary pieces in place to loosen this restriction, though perhaps
it takes another 23 minor release or so before we're ready to commit to making the minor versions
compatible.

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