OK, I pasted it into a new page in web site. On Wed, Aug 19, 2015 at 2:40 PM, 周千昊 <[email protected]> wrote:
> It is a good practice, should it be added this to the development guide? > > hongbin ma <[email protected]>于2015年8月19日周三 下午1:32写道： > > > hi, > > > > As we reviewed the code we found that Kylin left lots of garbage files > in: > > 1. Local file system of the CLI > > 2. HDFS > > 3. Local file system of the hadoop nodes. > > > > A ticked was opened to track this issue: > > https://issues.apache.org/jira/browse/KYLIN-926 > > > > For future developments, please: > > 1. Whenever you want to create temp files at Local, choose > > File.createTempFile or use the folder: > > BatchConstants.CFG_KYLIN_LOCAL_TEMP_DIR(/tmp/kylin), do not randomly use > > another folder in /tmp, it will end up a mess, and look unprofessional. > > > > 2. Whenever you create temp files at Local, remember to delete it after > > using it. It’s best to use FileUtils.forceDelete, as it also works for > > deleting folders. Try avoid deleteOnExit, in case Kylin exits abnormally. > > > > 3. Whenever you want to create files in HDFS, try to create it under > > kylin.hdfs.working.dir or BatchConstants.CFG_KYLIN_HDFS_TEMP_DIR, and > > remember to delete it after it is no longer useful. Try avoid throwing > > everything into hdfs:///tmp and leave it as garbage. > > > > > > -- > > Regards, > > > > *Bin Mahone | 马洪宾* > > Apache Kylin: http://kylin.io > > Github: https://github.com/binmahone > > > -- > Best Regard > ZhouQianhao >
