hive归档分区
Posted ChavinKing
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了hive归档分区相关的知识,希望对你有一定的参考价值。
归档hive历史分区不会减少hdfs存储空间,但是可以有效减轻hadoop namenode的压力,尤其在于小文件比较多的情况下。
$mkdir $HIVE_HOME/auxlib
$ cp /opt/cdh-5.3.6/hadoop-2.5.0/share/hadoop/tools/lib/hadoop-archives-2.5.0-cdh5.3.6.jar /opt/cdh-5.3.6/hive-0.13.1/auxlib/hadoop-archives-2.5.0-cdh5.3.6.jar
hive (chavin)> set hive.archive.enabled=true;
hive (chavin)> alter table emp archive partition(country=\'china\',state=\'beijing\');
intermediate.archived is hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ARCHIVED
intermediate.original is hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ORIGINAL
Creating data.har for hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing
in hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing/.hive-staging_hive_2017-05-24_13-23-51_914_3548751700804069937-1/-ext-10000/partlevel
Please wait... (this may take a while)
Moving hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing/.hive-staging_hive_2017-05-24_13-23-51_914_3548751700804069937-1/-ext-10000/partlevel to hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ARCHIVED
Moving hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing to hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ORIGINAL
Moving hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ARCHIVED to hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing
Moved: \'hdfs://db01:8020/user/hive/warehouse/chavin.db/emp/country=china/state=beijing_INTERMEDIATE_ORIGINAL\' to trash at: hdfs://db01:8020/user/hadoop/.Trash/Current
OK
Time taken: 2.17 seconds
可以看到,emp表下分区文件已经被打包成data.har文件了。
以上是关于hive归档分区的主要内容,如果未能解决你的问题,请参考以下文章