Apache
/
hbase
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HBASE-11717 Remove unused config 'hbase.offheapcache.percentage' from hbase-default.xml and book. (Anoop)

This commit is contained in:
anoopsjohn 2014-08-15 00:01:27 +05:30
parent ce6c204078
commit 2eb0757301
4 changed files with 0 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
hbase-common/src/main/resources/hbase-default.xml
View File

@ -987,15 +987,6 @@ possible configurations would overwhelm and obscure the important.
<value>false</value>
<description>Use Thrift TCompactProtocol binary serialization protocol.</description>
</property>
<property>
<name>hbase.offheapcache.percentage</name>
<value>0</value>
<description>The percentage of the off heap space (-XX:MaxDirectMemorySize) to be
allocated towards the experimental off heap "SlabCache" (This is different to
the BucketCache -- see the package javadoc for org.apache.hadoop.hbase.io.hfile
for more on your options). If you desire the cache to be disabled, simply set this
value to 0.</description>
</property>
<property>
<name>hbase.data.umask.enable</name>
<value>false</value>

3
hbase-server/src/test/java/org/apache/hadoop/hbase/mapred/TestTableSnapshotInputFormat.java
View File

@ -115,9 +115,6 @@ public class TestTableSnapshotInputFormat extends TableSnapshotInputFormatTestBa
"Snapshot job should be configured for default LruBlockCache.",
HConstants.HFILE_BLOCK_CACHE_SIZE_DEFAULT,
job.getFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, -1), 0.01);
Assert.assertEquals(
"Snapshot job should not use SlabCache.",
0, job.getFloat("hbase.offheapcache.percentage", -1), 0.01);
Assert.assertEquals(
"Snapshot job should not use BucketCache.",
0, job.getFloat("hbase.bucketcache.size", -1), 0.01);

3
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableSnapshotInputFormat.java
View File

@ -162,9 +162,6 @@ public class TestTableSnapshotInputFormat extends TableSnapshotInputFormatTestBa
"Snapshot job should be configured for default LruBlockCache.",
HConstants.HFILE_BLOCK_CACHE_SIZE_DEFAULT,
job.getConfiguration().getFloat(HConstants.HFILE_BLOCK_CACHE_SIZE_KEY, -1), 0.01);
Assert.assertEquals(
"Snapshot job should not use SlabCache.",
0, job.getConfiguration().getFloat("hbase.offheapcache.percentage", -1), 0.01);
Assert.assertEquals(
"Snapshot job should not use BucketCache.",
0, job.getConfiguration().getFloat("hbase.bucketcache.size", -1), 0.01);

21
src/main/docbkx/upgrading.xml
View File

@ -398,27 +398,6 @@ Successfully completed Log splitting
setup a secure HBase is on the way. </para>
</section>
<section
xml:id="slabcache">
<title>Experimental off-heap cache: SlabCache</title>
<para> A new cache was contributed to 0.92.0 to act as a solution between using the
“on-heap” cache which is the current LRU cache the region servers have and the
operating system cache which is out of our control. To enable
<emphasis>SlabCache</emphasis>, as this feature is being called, set
“-XX:MaxDirectMemorySize” in hbase-env.sh to the value for maximum direct memory
size and specify <property>hbase.offheapcache.percentage</property> in
<filename>hbase-site.xml</filename> with the percentage that you want to
dedicate to off-heap cache. This should only be set for servers and not for clients.
Use at your own risk. See this blog post, <link
xlink:href="http://www.cloudera.com/blog/2012/01/caching-in-hbase-slabcache/">Caching
in Apache HBase: SlabCache</link>, for additional information on this new
experimental feature. </para>
<para>This feature has mostly been eclipsed in later HBases. See <link
xlink:href="https://issues.apache.org/jira/browse/HBASE-7404 ">HBASE-7404 Bucket
Cache:A solution about CMS,Heap Fragment and Big Cache on HBASE</link>,
etc.</para>
</section>
<section>
<title>Changes in HBase replication </title>
<para>0.92.0 adds two new features: multi-slave and multi-master replication. The way to