Vivek Madani created ZOOKEEPER-2077:
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Summary: Wild-card/Regex Support for Zookeeper client commands
Key: ZOOKEEPER-2077
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2077
Project: ZooKeeper
Issue Type: New Feature
Components: java client
Reporter: Vivek Madani
We had an use-case where we had to list nodes matching a particular pattern
from a given path. While looking at the ZK client commands, it seems that it
does not support wildcard/regex.
I did try to overcome this by making some basic changes to the LSCommand.java
and adding a "-m" switch which accepts regex. Since I implemented this using
java.util.regex, it supports everything that Java regex supports.
I was thinking such functionality can be useful for 'ls' as well as 'delete'
(and deleteall). Though I implemented this at the client code for ls - this can
be done at the server side code as well and I have a preliminary plan on top of
my head to do this for ls, delete, deleteall.
Will it be worthwhile addition to make to zookeeper client? If so, I can work
on submitting a patch.
Points to consider in case such a support can be implemented:
1. Do we support Java regex or Unix Shell wildcards (*)?
2. Right now, create allows creating nodes with characters like * - we need to
make sure that such a change does not break or create confusion (Unix too
allows creating a directory with * BTW).
Any thoughts on whether this will be a worthwhile addition to Zookeeper client?
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