2017-01-12 00:50:53,705 DEBUG BaseHTTPSTransportConnector - Unable to execute HTTP POST due to IOException.Attempt=1; MaxRetries=5; Exception:Timeout waiting for connection from pool ++++ When publishing in bulk, the following message may be encountered in publisher logs.
2017-01-12 09:06:49,322 ERROR BaseHTTPSTransportConnector - Unable to execute File retrieval on destination:
https://xyz.prod.tridion.sdlproducts.com:8886/httpupload org.apache.http.conn.ConnectionPoolTimeoutException:
Timeout waiting for connection from pool at org.apache.http.impl.conn.PoolingClientConnectionManager.leaseConnection
(PoolingClientConnectionManager.java:226) at org.apache.http.impl.conn.PoolingClientConnectionManager$1.getConnection
(PoolingClientConnectionManager.java:195) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:423) at
org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:882) at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107) at
com.tridion.transport.connection.connectors.BaseHTTPSTransportConnector.retrieveFileIfPresent(BaseHTTPSTransportConnector.java:235) at
com.tridion.transport.connection.connectors.DiscoveryServiceTransportConnector.retrieveFileIfPresent(DiscoveryServiceTransportConnector.java:126) at
com.tridion.transport.connection.connectors.TransportPoolConnector.retrieveFileIfPresent(TransportPoolConnector.java:80) at
com.tridion.transport.workers.EndpointMetaWorker.getMetadata(EndpointMetaWorker.java:54) at
com.tridion.transport.DestinationController.run(DestinationController.java:219) at java.lang.Thread.run(Unknown Source)