在 HDFS 中查找早于 N 天的目录 [英] Finding directories older than N days in HDFS

问题描述

可以使用 hadoop fs -ls 查找所有早于 N 天(从当前日期算起)的目录吗?

Can hadoop fs -ls be used to find all directories older than N days (from the current date)?

我正在尝试编写一个清理例程来查找和删除 HDFS 上的所有目录(匹配模式)，这些目录是在当前日期前 N 天创建的.

I am trying to write a clean up routine to find and delete all directories on HDFS (matching a pattern) which were created N days prior to the current date.

推荐答案

此脚本列出所有早于 [days] 的目录:

This script lists all the directories that are older than [days] :

#!/bin/bash
usage="Usage: $0 [days]"

if [ ! "$1" ]
then
  echo $usage
  exit 1
fi

now=$(date +%s)
hadoop fs -lsr | grep "^d" | while read f; do 
  dir_date=`echo $f | awk '{print $6}'`
  difference=$(( ( $now - $(date -d "$dir_date" +%s) ) / (24 * 60 * 60 ) ))
  if [ $difference -gt $1 ]; then
    echo $f;
  fi
done

这篇关于在 HDFS 中查找早于 N 天的目录的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！