You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by st...@apache.org on 2016/02/26 22:49:32 UTC
hbase git commit: HBASE-15351 Fix description of
hbase.bucketcache.size in hbase-default.xml
Repository: hbase
Updated Branches:
refs/heads/master 3c660e2a0 -> 8f6e29785
HBASE-15351 Fix description of hbase.bucketcache.size in hbase-default.xml
Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/8f6e2978
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/8f6e2978
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/8f6e2978
Branch: refs/heads/master
Commit: 8f6e29785abff6b3205d7058d9b88c1cf27faa29
Parents: 3c660e2
Author: stack <st...@apache.org>
Authored: Fri Feb 26 13:49:26 2016 -0800
Committer: stack <st...@apache.org>
Committed: Fri Feb 26 13:49:26 2016 -0800
----------------------------------------------------------------------
.../src/main/resources/hbase-default.xml | 28 ++++++++++++--------
1 file changed, 17 insertions(+), 11 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/hbase/blob/8f6e2978/hbase-common/src/main/resources/hbase-default.xml
----------------------------------------------------------------------
diff --git a/hbase-common/src/main/resources/hbase-default.xml b/hbase-common/src/main/resources/hbase-default.xml
index e446a24..e50e89e 100644
--- a/hbase-common/src/main/resources/hbase-default.xml
+++ b/hbase-common/src/main/resources/hbase-default.xml
@@ -857,29 +857,35 @@ possible configurations would overwhelm and obscure the important.
<name>hbase.bucketcache.ioengine</name>
<value></value>
<description>Where to store the contents of the bucketcache. One of: heap,
- offheap, or file. If a file, set it to file:PATH_TO_FILE. See
- http://hbase.apache.org/book.html#offheap.blockcache for more information.
+ offheap, or file. If a file, set it to file:PATH_TO_FILE. See
+ http://hbase.apache.org/book.html#offheap.blockcache for more information.
</description>
</property>
<property>
<name>hbase.bucketcache.combinedcache.enabled</name>
<value>true</value>
<description>Whether or not the bucketcache is used in league with the LRU
- on-heap block cache. In this mode, indices and blooms are kept in the LRU
- blockcache and the data blocks are kept in the bucketcache.</description>
+ on-heap block cache. In this mode, indices and blooms are kept in the LRU
+ blockcache and the data blocks are kept in the bucketcache.</description>
</property>
<property>
<name>hbase.bucketcache.size</name>
- <value>65536</value>
- <description>The size of the buckets for the bucketcache if you only use a single size.
- Defaults to the default blocksize, which is 64 * 1024.</description>
+ <value></value>
+ <description>A float that EITHER represents a percentage of total heap memory
+ size to give to the cache (if < 1.0) OR, it is the total capacity in
+ megabytes of BucketCache. Default: 0.0</description>
</property>
<property>
<name>hbase.bucketcache.sizes</name>
<value></value>
- <description>A comma-separated list of sizes for buckets for the bucketcache
- if you use multiple sizes. Should be a list of block sizes in order from smallest
- to largest. The sizes you use will depend on your data access patterns.</description>
+ <description>A comma-separated list of sizes for buckets for the bucketcache.
+ Can be multiple sizes. List block sizes in order from smallest to largest.
+ The sizes you use will depend on your data access patterns.
+ Must be a multiple of 1024 else you will run into
+ 'java.io.IOException: Invalid HFile block magic' when you go to read from cache.
+ If you specify no values here, then you pick up the default bucketsizes set
+ in code (See BucketAllocator#DEFAULT_BUCKET_SIZES).
+ </description>
</property>
<property>
<name>hfile.format.version</name>
@@ -907,7 +913,7 @@ possible configurations would overwhelm and obscure the important.
<name>hbase.rs.cacheblocksonwrite</name>
<value>false</value>
<description>Whether an HFile block should be added to the block cache when the
- block is finished.</description>
+ block is finished.</description>
</property>
<property>
<name>hbase.rpc.timeout</name>