a8fd1119ce
Currently whenever a compaction/bulkload happen and the blocks are evicted from theirs buckets the buckets become fragmented and are not available to be used by other BucketSizes Bug Fix : Added Memory block type also to the list of evictions that need to happen when there is a needForExtra Improvement : Inorder to fix the non availabilty of Buckets and force the movement of buckets to transformed sizes, whenever we encounter a situation where an allocation cant be made for a BucketSize, we will forcefully free the entire buckets that have least occupancy ratio. This is the same strategy used by MemCached when they encounter a similar issue going by the name 'Slab Calcification'. Only improvement is that we use a heuristic to evict from the buckets that are least occupied and also avoid the BucketSizes where there is a single Bucket Change-Id: I9e3b4deb8d893953003ddf5f1e66312ed97ea9cb Signed-off-by: Ramkrishna <ramkrishna.s.vasudevan@intel.com> |
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| bin | ||
| conf | ||
| dev-support | ||
| hbase-annotations | ||
| hbase-archetypes | ||
| hbase-assembly | ||
| hbase-checkstyle | ||
| hbase-client | ||
| hbase-common | ||
| hbase-endpoint | ||
| hbase-examples | ||
| hbase-external-blockcache | ||
| hbase-hadoop-compat | ||
| hbase-hadoop2-compat | ||
| hbase-it | ||
| hbase-metrics | ||
| hbase-metrics-api | ||
| hbase-native-client | ||
| hbase-prefix-tree | ||
| hbase-procedure | ||
| hbase-protocol | ||
| hbase-protocol-shaded | ||
| hbase-resource-bundle | ||
| hbase-rest | ||
| hbase-rsgroup | ||
| hbase-server | ||
| hbase-shaded | ||
| hbase-shell | ||
| hbase-spark | ||
| hbase-testing-util | ||
| hbase-thrift | ||
| src/main | ||
| .gitattributes | ||
| .gitignore | ||
| CHANGES.txt | ||
| LICENSE.txt | ||
| NOTICE.txt | ||
| README.txt | ||
| pom.xml | ||
README.txt
Apache HBase [1] is an open-source, distributed, versioned, column-oriented store modeled after Google' Bigtable: A Distributed Storage System for Structured Data by Chang et al.[2] Just as Bigtable leverages the distributed data storage provided by the Google File System, HBase provides Bigtable-like capabilities on top of Apache Hadoop [3]. To get started using HBase, the full documentation for this release can be found under the doc/ directory that accompanies this README. Using a browser, open the docs/index.html to view the project home page (or browse to [1]). The hbase 'book' at http://hbase.apache.org/book.html has a 'quick start' section and is where you should being your exploration of the hbase project. The latest HBase can be downloaded from an Apache Mirror [4]. The source code can be found at [5] The HBase issue tracker is at [6] Apache HBase is made available under the Apache License, version 2.0 [7] The HBase mailing lists and archives are listed here [8]. The HBase distribution includes cryptographic software. See the export control notice here [9]. 1. http://hbase.apache.org 2. http://research.google.com/archive/bigtable.html 3. http://hadoop.apache.org 4. http://www.apache.org/dyn/closer.cgi/hbase/ 5. https://hbase.apache.org/source-repository.html 6. https://hbase.apache.org/issue-tracking.html 7. http://hbase.apache.org/license.html 8. http://hbase.apache.org/mail-lists.html 9. https://hbase.apache.org/export_control.html