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https://issues.apache.org/jira/browse/HADOOP-11764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495167#comment-14495167
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Anubhav Dhoot commented on HADOOP-11764:
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bq. the native code is still not linked if JAVA_LIBRARY_PATH doesn't include
library.leveldbjni.path (by default it doesn't library.leveldbjni.path is some
customized path).
[~zjshen] The custom library.leveldbjni.path does not need to be added to
JAVA_LIBRARY_PATH.
Copied below by sample test where i created a new directory and set only the
HADOOP_LEVELDBJNI_DIR to point to it
mkdir /testleveldb
export HADOOP_LEVELDBJNI_DIR=/testleveldb
/usr/java/default/bin/java -Dproc_nodemanager
-Dhadoop.log.dir=/home/adhoot/src/mr2-pseudo-dist/hadoop-3.0.0-SNAPSHOT/logs
-Dyarn.log.dir=/home/adhoot/src/mr2-pseudo-dist/hadoop-3.0.0-SNAPSHOT/logs
-Dhadoop.log.file=yarn.log -Dyarn.log.file=yarn.log -Dyarn.home.dir=
-Dyarn.id.str= -Dhadoop.root.logger=INFO,console
-Dyarn.root.logger=INFO,console -Dyarn.policy.file=hadoop-policy.xml -Xdebug
-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8001
-Dhadoop.home.dir=/home/adhoot/src/mr2-pseudo-dist/hadoop-3.0.0-SNAPSHOT
-Dhadoop.id.str=root -Dhadoop.policy.file=hadoop-policy.xml
-Dhadoop.security.logger=INFO,NullAppender
-Dlibrary.leveldbjni.path=/testleveldb
org.apache.hadoop.yarn.server.nodemanager.NodeManager
[root@anuonebox ah]# dir /testleveldb/
libleveldbjni-64-1-219738139685490287.8
> Hadoop should have the option to use directory other than tmp for extracting
> and loading leveldbjni
> ---------------------------------------------------------------------------------------------------
>
> Key: HADOOP-11764
> URL: https://issues.apache.org/jira/browse/HADOOP-11764
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Anubhav Dhoot
> Assignee: Anubhav Dhoot
> Attachments: YARN-3331.001.patch, YARN-3331.002.patch
>
>
> /tmp can be required to be noexec in many environments. This causes a
> problem when nodemanager tries to load the leveldbjni library which can get
> unpacked and executed from /tmp.
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