You are viewing a plain text version of this content. The canonical link for it is here.
Posted to common-issues@hadoop.apache.org by "Eli Collins (JIRA)" <ji...@apache.org> on 2011/03/28 23:54:05 UTC

[jira] [Created] (HADOOP-7211) Security uses proprietary Sun APIs

Security uses proprietary Sun APIs
----------------------------------

                 Key: HADOOP-7211
                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
             Project: Hadoop Common
          Issue Type: Improvement
            Reporter: Eli Collins


The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.

{noformat}
$ /home/eli/toolchain/java-x86_64-60/bin/java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
J9VM - 20110203_074623
JIT  - r9_20101028_17488ifx3
GC   - 20101027_AA)
JCL  - 20110203_01
{noformat}


--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Devaraj Das (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248095#comment-13248095 ] 

Devaraj Das commented on HADOOP-7211:
-------------------------------------

On HADOOP-6941, my aim was to make the hadoop code base compile with IBM's JDK, and ensure that there is no regression with Oracle's. I had done testing of HDFS/MR with security enabled. I didn't do the tests that would go through the SecurityUtil code path though (argh) [fixed in HADOOP-8251]. 
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Luke Lu (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248090#comment-13248090 ] 

Luke Lu commented on HADOOP-7211:
---------------------------------

Since the changes that address this jira are already committed, IMO, it's reasonable to resolve this jira and open a different jira for defects and/or additional unit tests.
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Todd Lipcon (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248081#comment-13248081 ] 

Todd Lipcon commented on HADOOP-7211:
-------------------------------------

bq. This jira is incorporated by the patches in HADOOP-6941 and HADOOP-7211

Did you mean another JIRA? This _is_ HADOOP-7211
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Updated] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Matt Foley (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Foley updated HADOOP-7211:
-------------------------------

    Target Version/s:   (was: 2.0.0, 1.0.3)

Resolved as dup, so removing Target Versions.
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Updated] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Eli Collins (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eli Collins updated HADOOP-7211:
--------------------------------

    Component/s: security

> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Todd Lipcon (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248084#comment-13248084 ] 

Todd Lipcon commented on HADOOP-7211:
-------------------------------------

I don't think this JIRA should be marked as duplicate, because clearly HADOOP-6941 wasn't thoroughly tested. As soon as I tried running a cluster with a 2NN I found that it didn't work. So I'm skeptical that there isn't more work to do...
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Issue Comment Edited] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Matt Foley (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248095#comment-13248095 ] 

Matt Foley edited comment on HADOOP-7211 at 5/6/12 9:48 PM:
------------------------------------------------------------

On HADOOP-6941, my aim was to make the hadoop code base compile with IBM's JDK, and ensure that there is no regression with Oracle's. I had done testing of HDFS/MR with security enabled. I didn't do the tests that would go through the SecurityUtil code path though (argh) - fixed in HADOOP-8251. 
                
      was (Author: devaraj):
    On HADOOP-6941, my aim was to make the hadoop code base compile with IBM's JDK, and ensure that there is no regression with Oracle's. I had done testing of HDFS/MR with security enabled. I didn't do the tests that would go through the SecurityUtil code path though (argh) [fixed in HADOOP-8251]. 
                  
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Todd Lipcon (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248032#comment-13248032 ] 

Todd Lipcon commented on HADOOP-7211:
-------------------------------------

HADOOP-6941 fixed compilation on the IBM JDK using reflection, but added some code which definitely does not work - eg:
{code}
      if (System.getProperty("java.vendor").contains("IBM")) {
        principalClass = Class.forName("com.ibm.security.krb5.PrincipalName");
        
        credentialsClass = Class.forName("com.ibm.security.krb5.Credentials");
        krb5utilClass = Class.forName("com.ibm.security.jgss.mech.krb5");
{code}

but the krb5utilClass here is invalid, and there doesn't appear to be any equivalent in the IBM JDK. Instead of this code which kind of looks like it should work, we should just throw an UnsupportedOperationException until someone actually fixes this.
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Luke Lu (Commented) (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248080#comment-13248080 ] 

Luke Lu commented on HADOOP-7211:
---------------------------------

I meant HADOOP-8251 :)
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Assigned] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Luke Lu (Assigned) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luke Lu reassigned HADOOP-7211:
-------------------------------

    Assignee: Luke Lu
    
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Resolved] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Luke Lu (Resolved) (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luke Lu resolved HADOOP-7211.
-----------------------------

          Resolution: Duplicate
    Target Version/s: 1.0.3, 2.0.0

This jira is incorporated by the patches in HADOOP-6941 and HADOOP-7211
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

[jira] [Commented] (HADOOP-7211) Security uses proprietary Sun APIs

Posted by "Eugene Koontz (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270059#comment-13270059 ] 

Eugene Koontz commented on HADOOP-7211:
---------------------------------------

I'm confused: which JIRA does this JIRA duplicate?
                
> Security uses proprietary Sun APIs
> ----------------------------------
>
>                 Key: HADOOP-7211
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7211
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>            Reporter: Eli Collins
>            Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5. These may disappear in future Java releases. Also Hadoop does not compile using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64 jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT  - r9_20101028_17488ifx3
> GC   - 20101027_AA)
> JCL  - 20110203_01
> {noformat}

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira