Add support for Aerospike.

aerospike/README.md

+## Quick Start
+
+This section describes how to run YCSB on Aerospike. 
+
+### 1. Start Aerospike
+
+### 2. Install Java and Maven
+
+### 3. Set Up YCSB
+
+Git clone YCSB and compile:
+
+    git clone http://github.com/brianfrankcooper/YCSB.git
+    cd YCSB
+    mvn -pl com.yahoo.ycsb:aerospike-binding -am clean package
+
+### 4. Provide Aerospike Connection Parameters
+
+The following connection parameters are available.
+
+  * `as.host` - The Aerospike cluster to connect to (default: `localhost`)
+  * `as.port` - The port to connect to (default: `3000`)
+  * `as.user` - The user to connect as (no default)
+  * `as.password` - The password for the user (no default)
+  * `as.timeout` - The transaction and connection timeout (in ms, default: `1000`)
+  * `as.namespace` - The namespace to be used for the benchmark (default: `ycsb`)
+
+Add them to the workload or set them with the shell command, as in:
+
+    ./bin/ycsb load aerospike -s -P workloads/workloada -p as.timeout=5000 >outputLoad.txt
+
+### 5. Load Data and Run Tests
+
+Load the data:
+
+    ./bin/ycsb load aerospike -s -P workloads/workloada >outputLoad.txt
+
+Run the workload test:
+
+    ./bin/ycsb run aerospike -s -P workloads/workloada >outputRun.txt
+

aerospike/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.yahoo.ycsb</groupId>
+    <artifactId>binding-parent</artifactId>
+    <version>0.3.0-SNAPSHOT</version>
+    <relativePath>../binding-parent</relativePath>
+  </parent>
+
+  <artifactId>aerospike-binding</artifactId>
+  <name>Aerospike DB Binding</name>
+  <packaging>jar</packaging>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.aerospike</groupId>
+      <artifactId>aerospike-client</artifactId>
+      <version>${aerospike.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>com.yahoo.ycsb</groupId>
+      <artifactId>core</artifactId>
+      <version>${project.version}</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+</project>

aerospike/src/main/java/com/yahoo/ycsb/db/AerospikeClient.java

+package com.yahoo.ycsb.db;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
+import java.util.Vector;
+
+import com.aerospike.client.AerospikeException;
+import com.aerospike.client.Bin;
+import com.aerospike.client.Key;
+import com.aerospike.client.Record;
+import com.aerospike.client.ResultCode;
+import com.aerospike.client.policy.ClientPolicy;
+import com.aerospike.client.policy.Policy;
+import com.aerospike.client.policy.RecordExistsAction;
+import com.aerospike.client.policy.WritePolicy;
+
+import com.yahoo.ycsb.ByteArrayByteIterator;
+import com.yahoo.ycsb.ByteIterator;
+import com.yahoo.ycsb.DBException;
+
+public class AerospikeClient extends com.yahoo.ycsb.DB {
+  private static final boolean DEBUG = false;
+
+  private static final String DEFAULT_HOST = "localhost";
+  private static final String DEFAULT_PORT = "3000";
+  private static final String DEFAULT_TIMEOUT = "10000";
+  private static final String DEFAULT_NAMESPACE = "ycsb";
+
+  private static final int RESULT_OK = 0;
+  private static final int RESULT_ERROR = 1;
+
+  private static final int WRITE_OVERLOAD_DELAY = 5;
+  private static final int WRITE_OVERLOAD_TRIES = 3;
+
+  private String namespace = null;
+
+  private com.aerospike.client.AerospikeClient client = null;
+  private int writeOverloadTries = WRITE_OVERLOAD_TRIES;
+
+  private Policy readPolicy = new Policy();
+  private WritePolicy insertPolicy = new WritePolicy();
+  private WritePolicy updatePolicy = new WritePolicy();
+  private WritePolicy deletePolicy = new WritePolicy();
+
+  public void init() throws DBException {
+    insertPolicy.recordExistsAction = RecordExistsAction.CREATE_ONLY;
+    updatePolicy.recordExistsAction = RecordExistsAction.UPDATE_ONLY;
+
+    Properties props = getProperties();
+
+    namespace = props.getProperty("as.namespace", DEFAULT_NAMESPACE);
+
+    String host = props.getProperty("as.host", DEFAULT_HOST);
+    String user = props.getProperty("as.user");
+    String password = props.getProperty("as.password");
+    int port = Integer.parseInt(props.getProperty("as.port", DEFAULT_PORT));
+    int timeout = Integer.parseInt(props.getProperty("as.timeout",
+        DEFAULT_TIMEOUT));
+
+    readPolicy.timeout = timeout;
+    insertPolicy.timeout = timeout;
+    updatePolicy.timeout = timeout;
+    deletePolicy.timeout = timeout;
+
+    ClientPolicy clientPolicy = new ClientPolicy();
+
+    if (user != null && password != null) {
+      clientPolicy.user = user;
+      clientPolicy.password = password;
+    }
+
+    try {
+      client =
+          new com.aerospike.client.AerospikeClient(clientPolicy, host, port);
+    } catch (AerospikeException e) {
+      throw new DBException(String.format("Error while creating Aerospike " +
+          "client for %s:%d.", host, port));
+    }
+  }
+
+  public void cleanup() throws DBException {
+    client.close();
+  }
+
+  @Override
+  public int read(String table, String key, Set<String> fields,
+      HashMap<String, ByteIterator> result) {
+    try {
+      Record record;
+
+      if (fields != null) {
+        record = client.get(readPolicy, new Key(namespace, table, key),
+            fields.toArray(new String[fields.size()]));
+      } else {
+        record = client.get(readPolicy, new Key(namespace, table, key));
+      }
+
+      if (record == null) {
+        if (DEBUG) {
+          System.err.println("Record key " + key + " not found (read)");
+        }
+
+        return RESULT_ERROR;
+      }
+
+      for (Map.Entry<String, Object> entry: record.bins.entrySet()) {
+        result.put(entry.getKey(),
+            new ByteArrayByteIterator((byte[])entry.getValue()));
+      }
+
+      return RESULT_OK;
+    } catch (AerospikeException e) {
+      System.err.println("Error while reading key " + key + ": " + e);
+      return RESULT_ERROR;
+    }
+  }
+
+  @Override
+  public int scan(String table, String start, int count, Set<String> fields,
+      Vector<HashMap<String, ByteIterator>> result) {
+    System.err.println("Scan not implemented");
+    return RESULT_ERROR;
+  }
+
+  private int write(String table, String key, WritePolicy writePolicy,
+      HashMap<String, ByteIterator> values) {
+    if (writeOverloadTries == 0) {
+      return RESULT_ERROR;
+    }
+
+    Bin[] bins = new Bin[values.size()];
+    int index = 0;
+
+    for (Map.Entry<String, ByteIterator> entry: values.entrySet()) {
+      bins[index] = new Bin(entry.getKey(), entry.getValue().toArray());
+      ++index;
+    }
+
+    int delay = WRITE_OVERLOAD_DELAY;
+    Key keyObj = new Key(namespace, table, key);
+
+    while (true) {
+      try {
+        client.put(writePolicy, keyObj, bins);
+        writeOverloadTries = WRITE_OVERLOAD_TRIES;
+        return RESULT_OK;
+      } catch (AerospikeException e) {
+        if (e.getResultCode() != ResultCode.DEVICE_OVERLOAD) {
+          System.err.println("Error while updating key " + key + ": " + e);
+          return RESULT_ERROR;
+        }
+
+        if (--writeOverloadTries == 0) {
+          if (DEBUG) {
+            System.err.println("Device overload: " + e);
+          }
+
+          return RESULT_ERROR;
+        }
+
+        try {
+          Thread.sleep(delay);
+        } catch (InterruptedException e2) {
+          if (DEBUG) {
+            System.err.println("Interrupted: " + e2);
+          }
+        }
+
+        delay *= 2;
+      }
+    }
+  }
+
+  @Override
+  public int update(String table, String key,
+      HashMap<String, ByteIterator> values) {
+    return write(table, key, updatePolicy, values);
+  }
+
+  @Override
+  public int insert(String table, String key,
+      HashMap<String, ByteIterator> values) {
+    return write(table, key, insertPolicy, values);
+  }
+
+  @Override
+  public int delete(String table, String key) {
+    try {
+      if (!client.delete(deletePolicy, new Key(namespace, table, key))) {
+        if (DEBUG) {
+          System.err.println("Record key " + key + " not found (delete)");
+        }
+
+        return RESULT_ERROR;
+      }
+
+      return RESULT_OK;
+    } catch (AerospikeException e) {
+      System.err.println("Error while deleting key " + key + ": " + e);
+      return RESULT_ERROR;
+    }
+  }
+}

bin/ycsb

@@ -28,6 +28,7 @@ COMMANDS = {
 
 DATABASES = {
     "accumulo"     : "com.yahoo.ycsb.db.AccumuloClient",
+    "aerospike"    : "com.yahoo.ycsb.db.AerospikeClient",
     "basic"        : "com.yahoo.ycsb.BasicDB",
     "cassandra-7"  : "com.yahoo.ycsb.db.CassandraClient7",
     "cassandra-8"  : "com.yahoo.ycsb.db.CassandraClient8",

distribution/pom.xml

@@ -27,6 +27,11 @@
       <artifactId>accumulo-binding</artifactId>
       <version>${project.version}</version>
     </dependency>
+    <dependency>
+      <groupId>com.yahoo.ycsb</groupId>
+      <artifactId>aerospike-binding</artifactId>
+      <version>${project.version}</version>
+    </dependency>
     <dependency>
       <groupId>com.yahoo.ycsb</groupId>
       <artifactId>cassandra-binding</artifactId>

pom.xml

@@ -70,6 +70,7 @@
     <hypertable.version>0.9.5.6</hypertable.version>
     <couchbase.version>1.1.8</couchbase.version>
     <tarantool.version>1.6.1</tarantool.version>
+    <aerospike.version>3.1.2</aerospike.version>
   </properties>
 
   <modules>
@@ -78,6 +79,7 @@
     <module>binding-parent</module>
     <!-- all the datastore bindings, lex sorted please -->
     <module>accumulo</module>
+    <module>aerospike</module>
     <module>cassandra</module>
     <module>couchbase</module>
     <module>distribution</module>