I am using concurrend append method from the class Core in Azure to store data to Azure Data lake.Below is the code and the exception which I got.I am getting this exception rarely not always.Could anyone guide me?...

public void invoke(String value)  {
        BitfinexSingletonClass obj = null;
        try {
            obj = BitfinexSingletonClass.getInstance();
        } catch (IOException e1) {
            slf4jLogger.info(e1.getMessage());
        }
        ADLStoreClient client = obj.getADLStoreClient();
        byte[] myBuffer = (value + "\n").getBytes();

        RequestOptions opts = new RequestOptions();

        opts.retryPolicy = new ExponentialBackoffPolicy();

        OperationResponse resp = new OperationResponse();
        slf4jLogger.info("" + value);
        slf4jLogger
                .info("...............Writing.........above......BITFINEX_DSHBTC_ORDER..Data............................ToADLake............");
        Core.concurrentAppend(BITFINEX_DSHBTC_ORDER, myBuffer, 0, myBuffer.length, true, client, opts, resp);
        slf4jLogger.info("...............BITFINEX_DSHBTC_ORDER...Data...Successfully....written.....to...AzureDataLake............");
        if (!resp.successful) {
            try {
                throw client.getExceptionFromResponse(resp, "BITFINEX_DSHBTC_ORDER data is not written to ADL");
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }

com.microsoft.azure.datalake.store.adlexception:操作concurrentappend失败，出现异常java.net.sockettimeoutexception:读取超时上次尝试5次后遇到异常[java.net.unknownhostexception，java.net.unknownhostexception，java.net.unknownhostexception，java.net.sockettimeoutexception，java.net.sockettimeoutexception]位于com.microsoft.azure.datalake.store.adlstoreclient.getexceptionfromresponse（adlstoreclient）。java:1124)在co.biz.yobit.sink.yobitlctctickeradlsink.invoke（yobitlctctickeradlsink。java:41)在org.apache.flink.streaming.api.operators.streamsink.processelement（streamsink。java:38)在org.apache.flink.streaming.runtime.io.streaminputprocessor.processinput（streaminputprocessor。java:185)在org.apache.flink.streaming.runtime.tasks.oneinputstreamtask.run（oneinputstreamtask。java:63)在org.apache.flink.streaming.runtime.tasks.streamtask.invoke（streamtask。java:261)在org.apache.flink.runtime.taskmanager.task.run（task。java:665)在java.lang.thread.run（线程。java:748)原因：java.net.sockettimeoutexception:java.net.socketinputstream.socketread0（本机方法）处的java.net.socketinputstream.socketread（socketinputstream）处的读取超时。java:116)在java.net.socketinputstream.read（socketinputstream。java:171)在java.net.socketinputstream.read（socketinputstream。java:141) 在sun.security.ssl.inputrecord.readfully（inputrecord。java:465)在sun.security.ssl.inputrecord.read（inputrecord。java:503)在sun.security.ssl.sslsocketimpl.readrecord（sslsocketimpl。java:973)在sun.security.ssl.sslsocketimpl.readdatarecord（sslsocketimpl。java:930)在sun.security.ssl.appinputstream.read（appinputstream。java:105)在java.io.bufferedinputstream.fill（bufferedinputstream。java:246)在java.io.bufferedinputstream.read1（bufferedinputstream。java:286)在java.io.bufferedinputstream.read（bufferedinputstream。java:345)在sun.net。www.http.httpclient.parsehttpheader（httpclient。java:735)在sun.net。www.http.httpclient.parsehttp（httpclient。java:678)在太阳网。www.protocol.http.httpurlconnection.getinputstream0（httpurlconnection。java:1569)在sun.net。www.protocol.http.httpurlconnection.getinputstream（httpurlconnection。java:1474)在java.net.httpurlconnection.getresponsecode（httpurlconnection。java:480)在太阳网。www.protocol.https.httpsurlconnectionimpl.getresponsecode（httpsurlconnectionimpl。java:338)在com.microsoft.azure.datalake.store.httptransport.makesinglecall（httptransport）上。java:292)在com.microsoft.azure.datalake.store.httptransport.makecall（httptransport。java:91)在com.microsoft.azure.datalake.store.core.concurrentappen（core。java:210) 在co.biz.yobit.sink.yobitlctctickeradlsink.invoke（yobitlctctickeradlsink。java:37) ... 6个以上