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https://issues.apache.org/jira/browse/HADOOP-17111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Shilun Fan updated HADOOP-17111:
--------------------------------
          Component/s: build
                       common
     Target Version/s: 3.3.1, 3.4.0
    Affects Version/s: 3.3.1
                       3.4.0
          Description: 
{code:java}
Targets
    Occurrences of 'com.google.common.base.Optional' in project with mask 
'*.java'
Found Occurrences  (3 usages found)
    org.apache.hadoop.yarn.server.nodemanager  (2 usages found)
        DefaultContainerExecutor.java  (1 usage found)
            71 import com.google.common.base.Optional;
        LinuxContainerExecutor.java  (1 usage found)
            22 import com.google.common.base.Optional;
    org.apache.hadoop.yarn.server.resourcemanager.recovery  (1 usage found)
        TestZKRMStateStorePerf.java  (1 usage found)
            21 import com.google.common.base.Optional;

{code}


  was:

{code:java}
Targets
    Occurrences of 'com.google.common.base.Optional' in project with mask 
'*.java'
Found Occurrences  (3 usages found)
    org.apache.hadoop.yarn.server.nodemanager  (2 usages found)
        DefaultContainerExecutor.java  (1 usage found)
            71 import com.google.common.base.Optional;
        LinuxContainerExecutor.java  (1 usage found)
            22 import com.google.common.base.Optional;
    org.apache.hadoop.yarn.server.resourcemanager.recovery  (1 usage found)
        TestZKRMStateStorePerf.java  (1 usage found)
            21 import com.google.common.base.Optional;

{code}



> Replace Guava Optional with Java8+ Optional
> -------------------------------------------
>
>                 Key: HADOOP-17111
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17111
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: build, common
>    Affects Versions: 3.3.1, 3.4.0
>            Reporter: Ahmed Hussein
>            Assignee: Ahmed Hussein
>            Priority: Major
>             Fix For: 3.3.1, 3.4.0
>
>         Attachments: HADOOP-17111.001.patch, HADOOP-17111.002.patch
>
>
> {code:java}
> Targets
>     Occurrences of 'com.google.common.base.Optional' in project with mask 
> '*.java'
> Found Occurrences  (3 usages found)
>     org.apache.hadoop.yarn.server.nodemanager  (2 usages found)
>         DefaultContainerExecutor.java  (1 usage found)
>             71 import com.google.common.base.Optional;
>         LinuxContainerExecutor.java  (1 usage found)
>             22 import com.google.common.base.Optional;
>     org.apache.hadoop.yarn.server.resourcemanager.recovery  (1 usage found)
>         TestZKRMStateStorePerf.java  (1 usage found)
>             21 import com.google.common.base.Optional;
> {code}



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