Collecting package metadata (current_repodata.json): failed 解决方法

Anaconda无法安装一些包的问题

anaconda Collecting package metadata (current_repodata.json): failed

具体报错信息为

(env_name) [root@host anaconda3]# conda install python==3.6.2
Collecting package metadata (current_repodata.json): failed

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
    '''
    此处略去
    '''
        raise Response304ContentUnchanged()
    conda.core.subdir_data.Response304ContentUnchanged

    During handling of the above exception, another exception occurred:
    '''
    此处略去
    '''
    json.decoder.JSONDecodeError: Expecting ':' delimiter: line 46906 column 14 (char 1474212)

`$ /root/anaconda3/bin/conda install python==3.6.2`

解决方法：
运行 conda clean -i 清除索引缓存即可，亲测有效