On Dec 15, 10:02 am, "Doug Judd" <[email protected]> wrote:
> Agreed. The tool looks very cool. I would prefer to see this functionality
> built into the hypertable command interpreter, so that we don't have to keep
> switching back-and-forth between tools to inspect the system.
Sounds good. We can add these features as "show *" hql commands. That
way all the thrift client would benefit as well.
>
> - Doug
>
> 2008/12/15 Luke <[email protected]>
>
>
>
> > On Dec 15, 1:41 am, "孔令华" <[email protected]> wrote:
> > > Hi Luke,
>
> > > Thank you very much!! It works. And I think the new config system is
> > > something like the getopt with some groups of predefined options, right?
>
> > Yeah, it's similar but more extensible and provides better validation.
>
> > > The only problem is that if I want to read some items from the
> > config-file
> > > without creating a client, is there any proper interface?
>
> > Yes. I did have that use case in mind. You can create any properties
> > object use
> > {{{
> > PropertiesPtr props = new Properties(); // I should provide a
> > short cut here
> > props->load(config_filename, Config::file_desc());
> > }}}
>
> > So the only interface difference with the old properties object for
> > 'load' is the second config file description object, which provides
> > default values and validation of the config file.
>
> > >http://groups.google.com/group/hypertable-dev/web/htdump.tgz?hl=en
> > > This program is written by us used to monitor the hypertable cluster. And
> > I
> > > cannot find an elegant way to make it work with the new config system.
> > And
> > > you can use it to help me to learn the new config system, thank you very
> > > much.
>
> > The least disruptive changes would use the properties object like the
> > above. There are more elegant changes (shorter code, better defaults/
> > validation of the properties) of course. The program looks useful. Do
> > you mind that we include this in the src/cc/Tools, so that we can
> > maintain it when the interface changes (we have some major hyperspace
> > changes in the works that would require changes to this program)
>
> > __Luke
>
> > > Best wishes!
>
> > > 2008/12/13 Luke <[email protected]>
>
> > > > On Dec 12, 4:38 am, Phoenix <[email protected]> wrote:
> > > > > Hi Doug,
>
> > > > > Oh, sorry. Java6 was mentioned. I missed it.
>
> > > > > And now it seems that the config is a problem for me. Can you give
> > > > > some instructions? And the apache example is out of date. Perhaps
> > > > > it's time to update it.
>
> > > > The apache examples should still work as is. The only thing that
> > > > prevent it from working properly is probably the timeout changes from
> > > > second to milliseconds, so the RETRY_TIMEOUT in the load program
> > > > should be 30000 now. I've updated the wiki to reflect that.
>
> > > > > Thank you. :)
>
> > > > > Best wishes
>
> > > > > On Dec 12, 7:16 pm, Phoenix <[email protected]> wrote:
>
> > > > > > Hi Doug,
>
> > > > > > According to the src, now the config-options need something called
> > > > > > Policy which makes it hard to write client program.
>
> > > > > > In older versions I can run a client program on another machine
> > that
> > > > > > just needs a config file. But now it seems hard to do so. The
> > > > > > configurations is get from the Config namespace, I donnot know how
> > to
> > > > > > force it read from a local config file. I tried the Properties
> > ::load
> > > > > > but failed. A Properties constructor which accepts a config file as
> > a
> > > > > > parameter may help a lot.
>
> > > > > > Perhaps we need more and update examples. And also the Makefile now
> > > > > > needs more libraries to link with. An example is helpful.
>
> > > > > > BTW, the DfsBroker is using java6 now. It would be better to
> > mention
> > > > > > this in the log. As the earlier version can be used with java5.
>
> > > > > > Best wishes.
>
> > > > > > On Dec 9, 5:07 am, "Doug Judd" <[email protected]> wrote:
>
> > > > > > > This latest version of Hypertable is incompatible with older
> > > > versions. Here
> > > > > > > is a list of the incompatibilities:
>
> > > > > > > 1. All timeouts have changed from seconds to milliseconds
> > > > > > > 2. Hyperspace data format has changed
> > > > > > > 3. Network wire protocol has changed
>
> > > > > > > To use this release, you will have to start with a clean
> > database.
> > > > If you
> > > > > > > have any pre-existing config files, you will have to modify them
> > by
> > > > changing
> > > > > > > all of the time properties from *seconds* to *milliseconds*.
> > Also,
> > > > there
> > > > > > > are a few more build dependencies:
>
> > > > > > > SIGAR (http://sourceforge.net/projects/sigar/)
> > > > > > > libevent (only required for optional ThriftBroker build)
> > > > > > > thrift (only required for optional ThriftBroker build)
>
> > > > > > > - Doug
>
> > > --
> > > ******************************************************
> > > Microprocessor R&D Center, Peking University
> > > Beijing, P.R.China, 100871
> > > Tel: 8610-62765828 ext. 874
> > > Fax: 8610-62756231
> > > Email: [email protected]
> > > ******************************************************
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