[orientdb] fixed issue #1045, updated to orientdb version 2.2.37, add…

…ed an example for remote connection

orientdb/README.md

@@ -53,6 +53,7 @@ WARNING: Creating a new database will be done safely with multiple threads on a
 * ```orientdb.url``` - (required) The address to your database.
     * Supported storage types: memory, plocal, remote
     * EX. ```plocal:/path/to/database```
+    * remote EX. ```remote:172.16.50.15:2424/database```
 * ```orientdb.user``` - The user to connect to the database with.
     * Default: ```admin```
 * ```orientdb.password``` - The password to connect to the database with.

orientdb/src/main/java/com/yahoo/ycsb/db/OrientDBClient.java

@@ -185,10 +185,9 @@ public void cleanup() throws DBException {
       clientCounter--;
       if (clientCounter == 0) {
         databasePool.close();
+        databasePool = null;
+        initialized = false;
       }
-
-      databasePool = null;
-      initialized = false;
     } finally {
       INIT_LOCK.unlock();
     }

pom.xml

@@ -96,7 +96,7 @@ LICENSE file.
     <mongodb.version>3.8.0</mongodb.version>
     <mongodb.async.version>2.0.1</mongodb.async.version>
     <openjpa.jdbc.version>2.1.1</openjpa.jdbc.version>
-    <orientdb.version>2.2.10</orientdb.version>
+    <orientdb.version>2.2.37</orientdb.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <redis.version>2.9.0</redis.version>
     <riak.version>2.0.5</riak.version>