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

HBASE-744 BloomFilter serialization/deserialization broken 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@677008 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jim Kellerman 2008-07-15 19:01:55 +00:00
parent 34f05ef4ae
commit d37bbd20d1
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/java/org/apache/hadoop/hbase/regionserver/HStoreFile.java
View File

@ -723,9 +723,9 @@ public class HStoreFile implements HConstants {
BloomFilter filter = new BloomFilter();
FSDataInputStream in = fs.open(filterFile);
try {
bloomFilter.readFields(in);
filter.readFields(in);
} finally {
fs.close();
in.close();
}
return filter;
}
@ -817,12 +817,15 @@ public class HStoreFile implements HConstants {
*
* the probability of false positives is minimized when k is
* approximately m/n ln(2).
*
* If we fix the number of hash functions and know the number of
* entries, then the optimal vector size m = (k * n) / ln(2)
*/
this.bloomFilter = new BloomFilter(
(int) DEFAULT_NUMBER_OF_HASH_FUNCTIONS,
(int) Math.ceil(
(DEFAULT_NUMBER_OF_HASH_FUNCTIONS * (1.0 * nrows)) /
Math.log(2.0))
Math.log(2.0)),
(int) DEFAULT_NUMBER_OF_HASH_FUNCTIONS
);
} else {
this.bloomFilter = null;