集群wso2 api管理器网关不向DAS发布统计信息

我正在使用DAS 3.0.1设置wso2 API manager 1.10.x，以便使用mysql发布API统计信息 . 我的API管理器系统与单独的VM上的网关工作节点集群 . 我按照以下文档通过UI启用API管理器分析 . http://mail.wso2.org/mailarchive/dev/2016-March/060905.html我还按照本文档手动为网关工作节点启用了分析 . http://blog.rukspot.com/2016/05/configure-wso2-apim-analytics-using-xml.html安装完成后，我重新启动所有服务器，一切都很好 . 但是当我从网关工作者日志发出API的请求时，我看不到它向DAS接收器发布任何统计信息 . DAS汇总表中也没有数据 . 要使API管理器网关工作节点向DAS发布统计信息，我需要做什么？我在配置中遗漏了什么吗？

我确实在DAS中看到以下异常（我认为这与网关工作节点不发布统计信息有关） .

[2017-05-31 17:02:46,660]  INFO {org.wso2.carbon.event.processor.manager.core.internal.CarbonEventManagementService} -  Starting polling event receivers
Exception in thread "dag-scheduler-event-loop" java.lang.NoClassDefFoundError: org/xerial/snappy/SnappyInputStream
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.spark.io.CompressionCodec$.createCodec(CompressionCodec.scala:66)
        at org.apache.spark.io.CompressionCodec$.createCodec(CompressionCodec.scala:60)
        at org.apache.spark.broadcast.TorrentBroadcast.org$apache$spark$broadcast$TorrentBroadcast$$setConf(TorrentBroadcast.scala:73)
        at org.apache.spark.broadcast.TorrentBroadcast.<init>(TorrentBroadcast.scala:80)
        at org.apache.spark.broadcast.TorrentBroadcastFactory.newBroadcast(TorrentBroadcastFactory.scala:34)
        at org.apache.spark.broadcast.BroadcastManager.newBroadcast(BroadcastManager.scala:62)
        at org.apache.spark.SparkContext.broadcast(SparkContext.scala:1292)
        at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$submitMissingTasks(DAGScheduler.scala:874)
        at org.apache.spark.scheduler.DAGScheduler.org$apache$spark$scheduler$DAGScheduler$$submitStage(DAGScheduler.scala:815)
        at org.apache.spark.scheduler.DAGScheduler.handleJobSubmitted(DAGScheduler.scala:799)
        at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1429)
        at org.apache.spark.scheduler.DAGSchedulerEventProcessLoop.onReceive(DAGScheduler.scala:1421)
        at org.apache.spark.util.EventLoop$$anon$1.run(EventLoop.scala:48)
Caused by: java.lang.ClassNotFoundException: org.xerial.snappy.SnappyInputStream cannot be found by spark-core_2.10_1.4.2.wso2v1
        at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
        at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
        at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

配置（api-manager.xml）：

<APIUsageTracking>
    <Enabled>true</Enabled>
    <DASServerURL>{tcp://10.14.3.93:7614}</DASServerURL>
    <DASRestApiURL>10.14.3.93:9446</DASRestApiURL>
    <SkipEventReceiverConnection>false</SkipEventReceiverConnect‌​ion>
    <PublisherClass>org.wso2.carbon.apimgt.usage.publisher.APIMg‌​tUsageDataBridgeData‌​Publisher</Publisher‌​Class>
    <PublishResponseMessageSize>false</PublishResponseMessageSiz‌​e>
</APIUsageTracking>