What version of HBase are you using ?
Assuming it is 0.94.x, you can find the default values
in src/main/resources/hbase-default.xml
e.g.
<property>
<name>hfile.block.cache.size</name>
<value>0.25</value>
<description>
Percentage of maximum heap (-Xmx setting) to allocate to block cache
used by HFile/StoreFile. Default of 0.25 means allocate 25%.
Set to 0 to disable but it's not recommended.
</description>
</property>
Cheers
On Wed, May 1, 2013 at 11:40 AM, Lewis John Mcgibbney <
[email protected]> wrote:
> Hi,
>
> Currently in Gora, we support the following table attributes, which we
> specify when mapping data into HBase;
> compression, blockCache, blockSize, bloomFilter, maxVersions, timeToLive,
> inMemory .
> These expand to the following
>
> HColumnDescriptor columnDescriptor = getOrCreateFamily(familyName,
> families);
>
> if(compression != null)
>
> columnDescriptor.setCompressionType(Algorithm.valueOf(compression));
> if(blockCache != null)
>
> columnDescriptor.setBlockCacheEnabled(Boolean.parseBoolean(blockCache));
> if(blockSize != null)
> columnDescriptor.setBlocksize(Integer.parseInt(blockSize));
> if(bloomFilter != null)
>
> columnDescriptor.setBloomFilterType(BloomType.valueOf(bloomFilter));
> if(maxVersions != null)
> columnDescriptor.setMaxVersions(Integer.parseInt(maxVersions));
> if(timeToLive != null)
> columnDescriptor.setTimeToLive(Integer.parseInt(timeToLive));
> if(inMemory != null)
> columnDescriptor.setInMemory(Boolean.parseBoolean(inMemory));
> }
>
> Within GORA-218[0], it is our intention to add default values for such
> attributes and document a bit about them as well. Currently an example of
> our hbase mapping file is here [1]. As you can see, the table block only
> has the name attribute, the remaining ones below are missing.
>
> Some guidance on setting these defaults and a brief explanation of what
> they do would be very much appreciated.
>
> Thank you very much in advance for anyone able to help us out on this one.
>
> Lewis
>
> [0] https://issues.apache.org/jira/browse/GORA-218
> [1]
>
> http://svn.apache.org/repos/asf/gora/trunk/gora-hbase/src/test/conf/gora-hbase-mapping.xml
>
> --
> *Lewis*
>
