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
