[ 
https://issues.apache.org/jira/browse/HDFS-15929?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Gautham Banasandra updated HDFS-15929:
--------------------------------------
    Description: 
RAND_pseudo_bytes was deprecated in OpenSSL 1.1.1. We get the following warning 
during compilation that it's deprecated -

{code}
/mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:
 In function ‘std::string hdfs::GetRandomClientName()’:
/mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:78:31:
 warning: ‘int RAND_pseudo_bytes(unsigned char*, int)’ is deprecated 
[-Wdeprecated-declarations]
   78 |   RAND_pseudo_bytes(&buf[0], 8);
      |                               ^
In file included from /usr/include/openssl/e_os2.h:13,
                 from /usr/include/openssl/ossl_typ.h:19,
                 from /usr/include/openssl/rand.h:14,
                 from 
/mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.h:29,
                 from 
/mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:19:
/usr/include/openssl/rand.h:44:1: note: declared here
   44 | DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
      | ^~~~~~~~~~~~~~~~~~
/mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:78:31:
 warning: ‘int RAND_pseudo_bytes(unsigned char*, int)’ is deprecated 
[-Wdeprecated-declarations]
   78 |   RAND_pseudo_bytes(&buf[0], 8);
      |                               ^
{code}

  was:
RAND_pseudo_bytes was deprecated in OpenSSL 1.1.1. We get the following warning 
during compilation that it's deprecated -

{code}
[WARNING] 
/home/jenkins/jenkins-agent/workspace/hadoop-multibranch_PR-2792/src/hadoop-hdfs-project/hadoop-hdfs-native-client/src/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:
 warning: 'int RAND_pseudo_bytes(unsigned char*, int)' is deprecated 
[-Wdeprecated-declarations]
[WARNING]                  from 
/home/jenkins/jenkins-agent/workspace/hadoop-multibranch_PR-2792/src/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc
[WARNING] /usr/include/openssl/rand.h:44:1: note: declared here
{code}


> Replace RAND_pseudo_bytes in util.cc
> ------------------------------------
>
>                 Key: HDFS-15929
>                 URL: https://issues.apache.org/jira/browse/HDFS-15929
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: libhdfs++
>    Affects Versions: 3.4.0
>            Reporter: Gautham Banasandra
>            Assignee: Gautham Banasandra
>            Priority: Critical
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> RAND_pseudo_bytes was deprecated in OpenSSL 1.1.1. We get the following 
> warning during compilation that it's deprecated -
> {code}
> /mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:
>  In function ‘std::string hdfs::GetRandomClientName()’:
> /mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:78:31:
>  warning: ‘int RAND_pseudo_bytes(unsigned char*, int)’ is deprecated 
> [-Wdeprecated-declarations]
>    78 |   RAND_pseudo_bytes(&buf[0], 8);
>       |                               ^
> In file included from /usr/include/openssl/e_os2.h:13,
>                  from /usr/include/openssl/ossl_typ.h:19,
>                  from /usr/include/openssl/rand.h:14,
>                  from 
> /mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.h:29,
>                  from 
> /mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:19:
> /usr/include/openssl/rand.h:44:1: note: declared here
>    44 | DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
>       | ^~~~~~~~~~~~~~~~~~
> /mnt/c/Users/Gautham/projects/apache/wsl/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/common/util.cc:78:31:
>  warning: ‘int RAND_pseudo_bytes(unsigned char*, int)’ is deprecated 
> [-Wdeprecated-declarations]
>    78 |   RAND_pseudo_bytes(&buf[0], 8);
>       |                               ^
> {code}



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