Weiwei Yang created HDFS-12503:
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Summary: Ozone: some UX improvements to oz_debug
Key: HDFS-12503
URL: https://issues.apache.org/jira/browse/HDFS-12503
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ozone
Reporter: Weiwei Yang
Assignee: Weiwei Yang
I tried to use {{oz_debug}} to dump KSM DB for offline analysis, found a few
problems need to be fixed in order to make this tool easier to use. I know this
is a debug tool for admins, but it's still necessary to improve the UX so new
users (like me) can figure out how to use it without reading more docs.
# Support *--help* argument. --help is the general arg for all hdfs scripts to
print usage.
# When specify output path {{-o}}, we need to add a description to let user
know the path needs to be a file (instead of a dir). If the path is specified
as a dir, it will end up with a funny error {{unable to open the database file
(out of memory)}}, which is pretty misleading. And it will be helpful to add a
check to make sure the specified path is not an existing dir.
# SQLCLI currently swallows exception
# We should remove {{levelDB}} words from the command output as we are by
default using rocksDB
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