hadoop2 - Hadoop installation and configuration: multiple versions side-by-side on same host -


can install different versions of hadoop on same system in pseudo distributed mode?

actually want explore features of different version of hadoop-1.x , hadoop-2.x , have configured hadoop-1.x , hadoop-2.x on 2 different systems running linux. there way configure on same machine?

yes, possible install multiple versions of hadoop software side-by-side on same host.

  • extract different versions of hadoop software separate sub-directories.
  • create separate configuration files (core-site.xml, hdfs-site.xml, yarn-site.xml, etc.) different versions, , keep these sets of files in separate directories.
  • make sure configure different directories things use local storage, such dfs.namenode.name.dir , dfs.datanode.data.dir in hdfs-site.xml. 2 versions should have data isolated 1 another. alternatively, if want attempt share data between 2 different versions, , run 1 version @ time, might able achieve that. depending on software versions involved, might run data incompatibilities or need run upgrade commands.
  • if want run multiple versions simultaneously, make sure configured distinct server ports things dfs.namenode.rpc-address in hdfs-site.xml , yarn.server.resourcemanager.address in yarn-site.xml.
  • when invoking commands, set environment variables hadoop_home , hadoop_conf_dir control version execute , configurations use.

everything above works fine manually deployed installation, such using apache hadoop distro. bigtop distros or vendor distros, rpm/deb/etc. packaging might less tolerant of side-by-side deployment.


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