YCSB 0.9.0

Incompatible changes

• ❗ Elasticsearch returns Status.NOT_FOUND instead of Status.ERROR when an item does not exist. See #721.

Known issues

• ❗ The convenience tarball of pre-compiled artifacts is missing the cassandra2 module (#766)
• The Cassandra CQL clients do not use prepared statements (#458).
• The mongodb binding does not honor the maxPoolSize=XX parameter and instead opens a connection per client thread. (see #317)
• Running directly from a source checkout on Windows is not supported. (see #335)
• 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 (#636)
• "Latest" distribution does not work properly on update transactions (#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 (#699)
• JDK 9 is not supported (#704)

Changes

• asyncbase: #718, #714
• couchbase2: #736, #711
• core: #727, #529, #719, #674, #694, #696
• elasticsearch: #721
• geode: #725
• googlebigtable: #734, #698, #690
• googledatastore: #682
• hbase10: #689
• hbase098: #688
• kudu: #720
• riak: #723, #686
• scripts: make bin/ycsb work with Python 2.6 in addition to Python 2.7 (#709)

Tested Databases

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

• 🆕 Async HBase 1.7 (via asynchbase binding).
• Couchbase2 4.1 (via couchbase2 binding).
• Elasticsearch 2.0.2, 2.1.2, 2.2.2, 2.3.2 (via elasticsearch binding).
• Apache Geode (incubating) 1.0.0-incubating.M2 (via geode binding).
• Apache HBase 1.0.0 (CDH5.5.2) (via hbase10 bindings).
• Apache Kudu (via kudu binding).
• 🆕 Google Bigtable (via googlebigtable binding).
• Google Cloud Datastore (via googledatastore binding).
• 🆕 Riak 2.x.y (via riak binding).

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 Cassandra 2.5.5 (via cassandra2-cql binding). (see #766)
• Apache HBase 0.98 (via hbase098 binding).
• Apache Kudu (incubating) (via kudu binding).
• Apache Solr 5.4.0 (via solr binding).
• DynamoDB using AWS SDK 1.10.48 (via dynamodb binding).
• 🆕 Google Bigtable accessing using the HBase client (via hbase10 binding)
• JDBC on MySQL 5.1.73 (via jdbc binding).
• Memcached 1.4.4 (via memcached binding).
• MongoDB 1.8.5(async only), 2.0.9, 2.2.7, 2.4.14, 2.6.12, 3.0.11, 3.2.4 (via mongodb and mongodb-async bindings).
• Tarantool 1.6.6-249, 1.6.8, 1.7-alpha (via tarantool binding).

Untested:

• Apache Cassandra versions prior to 2.0 (via cassandra-7, cassandra-8, cassandra-10 bindings), or Cassandra3 (via cassandra2-cql binding) (see #766).
• 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).