We tried to extract large volume of data from a 42-node cluster about three times and in all attempts, client sessions aborts after ~ 60 hours.
Here's what we see in in the client logs I have reviewed the multiple timeout settings in C*, but none seemed to relate to the 60 hrs limit. What is potentially enforcing the ~ 60-hr timeout? 19:38:55.545 [cluster1-nio-worker-0] DEBUG com.datastax.driver.core.Connection - Connection[ cassandra.prod.int.MyBiz.com/10.242.145.21:9042-1, inFlight=0, closed=false] heartbeat query succeeded 19:39:15.804 [main] ERROR com.MyBiz.getdata.main.FetchTrackingData - com.MyBiz.getdata.main.FetchTrackingData:main:main Issue with getting connection or clusterCassandra timeout during read query at consistency LOCAL_ONE (1 responses were required but only 0 replica responded) com.datastax.driver.core.exceptions.ReadTimeoutException: Cassandra timeout during read query at consistency LOCAL_ONE (1 responses were required but only 0 replica responded) at com.datastax.driver.core.exceptions.ReadTimeoutException.copy(ReadTimeoutException.java:88) at com.datastax.driver.core.exceptions.ReadTimeoutException.copy(ReadTimeoutException.java:25) at com.datastax.driver.core.DriverThrowables.propagateCause(DriverThrowables.java:37) at com.datastax.driver.core.ArrayBackedResultSet$MultiPage.prepareNextRow(ArrayBackedResultSet.java:308) at com.datastax.driver.core.ArrayBackedResultSet$MultiPage.isExhausted(ArrayBackedResultSet.java:265) at com.datastax.driver.core.ArrayBackedResultSet$1.hasNext(ArrayBackedResultSet.java:136) at com.MyBiz.getdata.main.FetchTrackingData.main(FetchTrackingData.java:118) Caused by: com.datastax.driver.core.exceptions.ReadTimeoutException: Cassandra timeout during read query at consistency LOCAL_ONE (1 responses were required but only 0 replica responded) at com.datastax.driver.core.exceptions.ReadTimeoutException.copy(ReadTimeoutException.java:115) ---------------------------------------- Thank you