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https://issues.apache.org/jira/browse/HDFS-12026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16655994#comment-16655994
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Konstantin Shvachko commented on HDFS-12026:
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+ 3.x release managers (hope I got that right).
Looks to me this introduced an incompatible change. It now (Hadoop 3.2)
requires gcc 4.6 and glibc 2.14 or higher, which was not required for Hadoop
3.0 and 3.1. So, if I could run Hadoop 3.0 and 3.1 on RHEL-6, where the
versions of gcc and glibc are not available, I cannot upgrade my cluster to
Hadoop 3.2 on these boxes.
Does it contradict [binary
compatibility|https://hadoop.apache.org/docs/r3.1.0/hadoop-project-dist/hadoop-common/Compatibility.html#Java_Binary_compatibility_for_end-user_applications_i.e._Apache_Hadoop_ABI]?
> libhdfs++: Fix compilation errors and warnings when compiling with Clang
> -------------------------------------------------------------------------
>
> Key: HDFS-12026
> URL: https://issues.apache.org/jira/browse/HDFS-12026
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Anatoli Shein
> Assignee: Anatoli Shein
> Priority: Major
> Attachments: HDFS-12026.HDFS-8707.000.patch,
> HDFS-12026.HDFS-8707.001.patch, HDFS-12026.HDFS-8707.002.patch,
> HDFS-12026.HDFS-8707.003.patch, HDFS-12026.HDFS-8707.004.patch,
> HDFS-12026.HDFS-8707.005.patch, HDFS-12026.HDFS-8707.006.patch,
> HDFS-12026.HDFS-8707.007.patch, HDFS-12026.HDFS-8707.008.patch,
> HDFS-12026.HDFS-8707.009.patch, HDFS-12026.HDFS-8707.010.patch
>
>
> Currently multiple errors and warnings prevent libhdfspp from being compiled
> with clang. It should compile cleanly using flag:
> -std=c++11
> and also warning flags:
> -Weverything -Wno-c++98-compat -Wno-missing-prototypes
> -Wno-c++98-compat-pedantic -Wno-padded -Wno-covered-switch-default
> -Wno-missing-noreturn -Wno-unknown-pragmas -Wconversion -Werror
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