com.google.common.util.concurrent.UncheckedExecutionException

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  • We use PasswordAuthenticator and PasswordAuthorizer. The system_auth has a RF of 10 per DC over 2 DCs. The permissions_validity_in_ms is 5 minutes. We still have few thousand requests failing each day with the trace below. The reason for this is read cache request realizing that cached entry has expired and doing a blocking request to refresh cache. We should have cache refreshed periodically only in the back ground. The user request should simply look at the cache and not try to refresh it. com.google.common.util.concurrent.UncheckedExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2258) at com.google.common.cache.LocalCache.get(LocalCache.java:3990) at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3994) at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4878) at org.apache.cassandra.service.ClientState.authorize(ClientState.java:292) at org.apache.cassandra.service.ClientState.ensureHasPermission(ClientState.java:172) at org.apache.cassandra.service.ClientState.hasAccess(ClientState.java:165) at org.apache.cassandra.service.ClientState.hasColumnFamilyAccess(ClientState.java:149) at org.apache.cassandra.cql3.statements.ModificationStatement.checkAccess(ModificationStatement.java:75) at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:102) at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:113) at org.apache.cassandra.thrift.CassandraServer.execute_cql3_query(CassandraServer.java:1735) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4162) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4150) at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32) at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34) at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:206) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.auth.Auth.selectUser(Auth.java:256) at org.apache.cassandra.auth.Auth.isSuperuser(Auth.java:84) at org.apache.cassandra.auth.AuthenticatedUser.isSuper(AuthenticatedUser.java:50) at org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:68) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:278) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:275) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3589) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2374) at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2337) at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2252) ... 19 more Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:105) at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:943) at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:828) at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:140) at org.apache.cassandra.auth.Auth.selectUser(Auth.java:245) ... 28 more ERROR [Thrift:17232] 2014-10-24 05:06:51,004 CustomTThreadPoolServer.java (line 224) Error occurred during processing of message. com.google.common.util.concurrent.UncheckedExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2258) at com.google.common.cache.LocalCache.get(LocalCache.java:3990) at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3994) at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4878) at org.apache.cassandra.service.ClientState.authorize(ClientState.java:292) at org.apache.cassandra.service.ClientState.ensureHasPermission(ClientState.java:172) at org.apache.cassandra.service.ClientState.hasAccess(ClientState.java:165) at org.apache.cassandra.service.ClientState.hasColumnFamilyAccess(ClientState.java:149) at org.apache.cassandra.cql3.statements.SelectStatement.checkAccess(SelectStatement.java:116) at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:102) at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:113) at org.apache.cassandra.thrift.CassandraServer.execute_cql3_query(CassandraServer.java:1735) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4162) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4150) at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32) at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34) at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:206) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.auth.Auth.selectUser(Auth.java:256) at org.apache.cassandra.auth.Auth.isSuperuser(Auth.java:84) at org.apache.cassandra.auth.AuthenticatedUser.isSuper(AuthenticatedUser.java:50) at org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:68) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:278) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:275) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3589) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2374) at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2337) at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2252) ... 19 more Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:105) at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:943) at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:828) at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:140) at org.apache.cassandra.auth.Auth.selectUser(Auth.java:245) ... 28 more
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    • com.google.common.util.concurrent.UncheckedExecutionException: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2258) at com.google.common.cache.LocalCache.get(LocalCache.java:3990) at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3994) at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4878) at org.apache.cassandra.service.ClientState.authorize(ClientState.java:292) at org.apache.cassandra.service.ClientState.ensureHasPermission(ClientState.java:172) at org.apache.cassandra.service.ClientState.hasAccess(ClientState.java:165) at org.apache.cassandra.service.ClientState.hasColumnFamilyAccess(ClientState.java:149) at org.apache.cassandra.cql3.statements.SelectStatement.checkAccess(SelectStatement.java:116) at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:102) at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:113) at org.apache.cassandra.thrift.CassandraServer.execute_cql3_query(CassandraServer.java:1735) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4162) at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql3_query.getResult(Cassandra.java:4150) at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32) at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34) at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:206) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.auth.Auth.selectUser(Auth.java:256) at org.apache.cassandra.auth.Auth.isSuperuser(Auth.java:84) at org.apache.cassandra.auth.AuthenticatedUser.isSuper(AuthenticatedUser.java:50) at org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:68) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:278) at org.apache.cassandra.service.ClientState$1.load(ClientState.java:275) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3589) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2374) at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2337) at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2252) ... 19 more Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses. at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:105) at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:943) at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:828) at org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:140) at org.apache.cassandra.auth.Auth.selectUser(Auth.java:245) ... 28 more

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