Hi, ted and JM, Thanks for the nice introduction. I have read the Omid paper,
which looks use a centralized party to do the coordination and achieves 72K
transactions per sec. And It does much more work than just assigning
timestamps, and I think it implicitly justifies the usage of a global tim
Hi, Ted and Anoop, thanks for your notes.
I am talking about column rather than column family, since physically column
family should be able to perform efficiently (storage layer, CF's are stored
separately). But columns of the same column family may be mixed physically, and
that makes filters c
Hi, I have figured out the problem... The XML snippet in previous email works
for HBase 092 but not for 094. By consulting HBase-default.xml, it can be done
to disable all compact ions. Thanks all the same.
Regards,
Yun
On Nov 22, 2012, at 11:06 PM, ramkrishna vasudevan
wrote:
> Hi Yun,
>
>
Thanks, for the suggestions. Will do instrumentation based on JMX.
Regards,
Yun
On Nov 12, 2012, at 12:59 AM, Stack wrote:
> On Sat, Nov 10, 2012 at 7:03 AM, yun peng wrote:
>> Hi, I want to profile the # of disk access (both random and sequential)
>> issued from HBase (into HDFS). For disk rea
Hi, thanks for the comments. One thing is shouldn't web UI comes from the
hbase API, or can I issue function call to get the progress of compaction?.
Hun
On Nov 8, 2012, at 1:33 AM, ramkrishna vasudevan
wrote:
> There is no interface which says that the major compaction is completed.
> But
The comment clear things up. Configuration through Java code is also working
too. Thanks.
Yun
On Oct 22, 2012, at 12:34 AM, lars hofhansl wrote:
> There currently is not. You have setup your column families to support this
> (Note that you only need to do that once per column family!).
> This
Hi, for the record, I have tried fs api as well, and they are the same with
each other.
Regards,
Yun
On Oct 21, 2012, at 12:45 AM, lohit wrote:
> Looks like StoreFile.getModificationTime is returning you in seconds
> precision.
> I am not sure what other APIs could be used here, but if you kno
Hi, Anoop and Ram,
As I have coded the idea, the detailed instructions are very helpful. One
minor thing to add is that coming out from scanner are the KeyValues which are
already sorted by column qualifier and time stamps. though i did not find it
mentioned in java doc, but i found it very use
