Hi,
I used the following script to deploy hbase 0.90 jar to internal maven
repository but was not successful:
#!/usr/bin/env bash
set -x
mvn deploy:deploy-file -Dfile=target/hbase-0.90.0.jar -Dpackaging=jar
-DgroupId=org.apache.hbase -DartifactId=hbase -Dversion=0.90.0
Nice list of things we need to do to make logging faster (with useful
citations on current state of art). This notion of early lock release
(ELR) is worth looking into (Jon, for high rates of counter
transactions, you've been talking about aggregating counts in front of
the WAL lock... maybe an
Oh no, let's be wary of those server rewrites. My micro profiling is
showing about 30 usec for a lock handoff in the HBase client...
I think we should be able to get big wins with minimal things. A big
rewrite has it's major costs, not to mention to effectively be async
we'd have to rewrite
just run 'mvn install' in our directory and that should do the trick.
everything else is implied by pom.xml. well except the repository
stuff.
-ryan
On Wed, Dec 29, 2010 at 10:29 AM, Ted Yu yuzhih...@gmail.com wrote:
Hi,
I used the following script to deploy hbase 0.90 jar to internal maven
In 0.90,
/**
* Bloom enabled with Table row as Key
*/
ROW,
/**
* Bloom enabled with Table row column (family+qualifier) as Key
*/
ROWCOL
Is there wiki / doc on which type to use in various scenarios ?
Thanks
I don't think there's an explicit wiki. Which option depends on whether
your use case is calling get() for entire rows or for specific columns in
a row. It also depends on analyzing your workload to determine how likely
a row will be in every store file vs. a specific column. Also, since a
row
+1 for ELR.
I think having some data structure where we prepare the next stage of
sync() operations instead of holding the row lock over the sync would be a
big win for hot regions without a huge refactor. I think the other two
optimizations are useful to think about, but wouldn't have the same
Here is link to the 0.90.0 BF doc Ted:
http://people.apache.org/~stack/hbase-0.90.0-candidate-2/docs/blooms.html
Its from some doc Nicolas wrote way back.
@N Yeah, if you want to add a bit to the book or elsewhere (We can
link to the latter).
St.Ack
On Wed, Dec 29, 2010 at 2:06 PM, Nicolas
In our application, we want to build a index htable to a core htable, and
the key of the index includes multiple columns in the core htable.
for example:
The core table:
RowKey - column1, column2, column3, column4
Note: The length of column1 and column2 is irregular.
The index table:
RowKey -
