YCSB 0.11.0

Incompatible Changes

• [cassandra] Deprecated Cassandra client removed. (see #794)
• [cassandra] Rename of cassandra2-cql client to cassandra-cql.
• [couchbase2] Deprecated couchbase client in favor of couchbase2. (see #791)

Known Issues

• The Cassandra CQL clients do not use prepared statements. (see #458)
• The mongodb binding does not honor the maxPoolSize=XX parameter and instead opens a connection per client thread. (see #317)
• Several unsupported datastore bindings are still listed in CLI help. (see #328)
• The HBase binding does not report a clear error message on encountering version incompatibility. (see #343)
• Datastore drivers that lack timeouts may result in YCSB failing to honor the maxexecutiontime parameter. (see #618)
• Redis Scans are not performant. (see #636)
• "Latest" distribution does not work properly on update transactions. (see #640)
• Accumulo client currently always claims success even when the record it's supposed to operate on (e.g. for a read) doesn't exist. (see #699)
• JDK 9 is not supported. (see #704)
• The Rados client is missing from the properties file for new platform-specific script. (see #790)

Tested Datastores

Datastore bindings that have been changed in this release and verified as working:

• 🆕 ArangoDB 2.8.7 (via arangodb binding).
  • [arangodb] Support for ArangoDB. (see #749)
• Apache Geode (incubating) 1.0.0-incubating.M3 (via geode binding).
  • [geode] Update to Apache Geode (incubating) to improve memory footprint. (see #828)
• Couchbase2 4.0 and 4.5 (via couchbase2 binding).
  • [couchbase2] Deprecated couchbase client in favor of couchbase2. (see #791)
  • [couchbase2] Capability to specify TTL for Couchbase2. (see #803)
• Elasticsearch 2.4 (via elasticsearch binding).
  • [elasticsearch] Various Elasticsearch improvements. (see #800)
• Apache Kudu 0.9.0-incubating (via kudu binding)
  • [kudu] Update Kudu binding to 0.9.0. (see #774)

Supported bindings, tested in previous releases, unchanged in this release:

• Aerospike (via aerospike binding).
• Amazon S3 (via s3 binding).
• Apache Accumulo 1.6.0 (via accumulo binding).
• Apache HBase 0.98 (via hbase098 binding).
• Apache HBase 1.0.0 (CDH5.5.2) (via hbase10 bindings).
• Apache Solr 5.4.0 (via solr binding).
• Async HBase 1.7 (via asynchbase binding).
• DynamoDB using AWS SDK 1.10.48 (via dynamodb binding).
• Google Bigtable (via googlebigtable binding).
• Google Bigtable accessing using the HBase client (via hbase10 binding)
• Google Cloud Datastore (via googledatastore binding).
• Memcached 1.4.4 (via memcached binding).
• Riak 2.x.y (via riak binding).
• Tarantool 1.6.6-249, 1.6.8, 1.7-alpha (via tarantool binding).

Untested Datastores:

• Apache Cassandra 2.0+ (via cassandra-cql binding)
• Apache Cassandra version 3+ (via cassandra-cql binding)
• Apache HBase prior to 0.98 (via hbase094 binding).
• HyperTable (via hypertable binding).
• Infinispan (via infinispan and infinispan-cs bindings)
• Mapkeeper (via mapkeeper binding)
• NoSQLDB (via nosqldb binding)
• OrientDB 2.1.2 (via orientdb binding).

Framework Fixes and Changes

• [core] Fix issue with hdrhistogram+raw. (see #788)
• [core] Performance optimizations for BasicDB and RandomByteIterator. (see #815)

Thanks

This release was tested by the following contributors: @charliemblack, @danburkert, @daschl, @jasontedor and @smallsmallc. Their efforts are highly appreciated, as also those of @busbey who helped facilitate the release, as usual.