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https://issues.apache.org/jira/browse/HBASE-13320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14383686#comment-14383686
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ramkrishna.s.vasudevan commented on HBASE-13320:
------------------------------------------------
[~sreenivasulureddy]
Did you try to start a region server with the above changed default value?
Because here
{code}
int blockSize = c.getInt(BLOCKCACHE_BLOCKSIZE_KEY,
HConstants.DEFAULT_BLOCKSIZE);
float bucketCachePercentage = c.getFloat(BUCKET_CACHE_SIZE_KEY, 0F);
long bucketCacheSize = (long) (bucketCachePercentage < 1? mu.getMax() *
bucketCachePercentage:
bucketCachePercentage * 1024 * 1024);
if (bucketCacheSize <= 0) {
throw new IllegalStateException("bucketCacheSize <= 0; Check " +
BUCKET_CACHE_SIZE_KEY + " setting and/or server java heap size");
}
{code}
Setting 0 would mean that we may end up bucketCacheSize as 0? If we allow the
hbase-default.xml to have this default value then it would mean that we would
get a bucketCacheSize as 65536 * 1024 * 1024 as default. (The comment for the
property is anyway wrong)
If we make the default as 1 in the hbase-default.xml then we will always get
1024*1024 as the default bucket cache size.
> 'hbase.bucketcache.size' configuration value is not correct in
> hbase-default.xml
> ---------------------------------------------------------------------------------
>
> Key: HBASE-13320
> URL: https://issues.apache.org/jira/browse/HBASE-13320
> Project: HBase
> Issue Type: Bug
> Components: hbase
> Affects Versions: 2.0.0
> Reporter: Y. SREENIVASULU REDDY
> Assignee: Y. SREENIVASULU REDDY
> Fix For: 2.0.0
>
> Attachments: HBASE-13320.patch, HBASE-v2-13320.patch
>
>
> In hbase-default.xml file
> * 'hbase.bucketcache.size' is not correct
> We either specify it as a float or in MB's and the default value that is
> mentioned is never used
> {code}
> <property>
> <name>hbase.bucketcache.size</name>
> <value>65536</value>
> <source>hbase-default.xml</source>
> </property>
> {code}
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