Yes C* is running as cassandra: cassand+ 2267 1 99 10:18 ? 00:02:56 java -Xloggc:/var/log/cassandra/gc.log -ea -XX:+UseThreadPriorities -XX:Threa...
INFO [main] 2017-04-06 10:35:42,956 Config.java:474 - Node configuration:[allocate_tokens_for_keyspace=null; authenticator=PasswordAuthenticator; authorizer=CassandraAuthorizer; auto_bootstrap=true; auto_snapshot=true; back_pressure_enabled=false; back_pressure_strategy=org.apache.cassandra.net.RateBasedBackPressure{high_ratio=0.9, factor=5, flow=FAST}; batch_size_fail_threshold_in_kb=50; batch_size_warn_threshold_in_kb=5; batchlog_replay_throttle_in_kb=1024; broadcast_address=null; broadcast_rpc_address=null; buffer_pool_use_heap_if_exhausted=true; cas_contention_timeout_in_ms=6000000; cdc_enabled=false; cdc_free_space_check_interval_ms=250; cdc_raw_directory=null; cdc_total_space_in_mb=0; client_encryption_options=<REDACTED>; cluster_name=company; column_index_cache_size_in_kb=2; column_index_size_in_kb=64; commit_failure_policy=ignore; commitlog_compression=null; commitlog_directory=/mnt/cassandra/commitlog; commitlog_max_compression_buffers_in_pool=3; commitlog_periodic_queue_size=-1; commitlog_segment_size_in_mb=32; commitlog_sync=periodic; commitlog_sync_batch_window_in_ms=NaN; commitlog_sync_period_in_ms=10000; commitlog_total_space_in_mb=null; compaction_large_partition_warning_threshold_mb=100; compaction_throughput_mb_per_sec=16; concurrent_compactors=null; concurrent_counter_writes=32; concurrent_materialized_view_writes=32; concurrent_reads=32; concurrent_replicates=null; concurrent_writes=32; counter_cache_keys_to_save=2147483647; counter_cache_save_period=7200; counter_cache_size_in_mb=null; counter_write_request_timeout_in_ms=6000000; credentials_cache_max_entries=1000; credentials_update_interval_in_ms=-1; credentials_validity_in_ms=2000; cross_node_timeout=false; data_file_directories=[Ljava.lang.String;@223f3642; disk_access_mode=auto; disk_failure_policy=ignore; disk_optimization_estimate_percentile=0.95; disk_optimization_page_cross_chance=0.1; disk_optimization_strategy=ssd; dynamic_snitch=true; dynamic_snitch_badness_threshold=0.1; dynamic_snitch_reset_interval_in_ms=600000; dynamic_snitch_update_interval_in_ms=100; enable_scripted_user_defined_functions=false; enable_user_defined_functions=false; enable_user_defined_functions_threads=true; encryption_options=null; endpoint_snitch=SimpleSnitch; file_cache_size_in_mb=null; gc_log_threshold_in_ms=200; gc_warn_threshold_in_ms=1000; hinted_handoff_disabled_datacenters=[]; hinted_handoff_enabled=true; hinted_handoff_throttle_in_kb=1024; hints_compression=null; hints_directory=/mnt/cassandra/hints; hints_flush_period_in_ms=10000; incremental_backups=false; index_interval=null; index_summary_capacity_in_mb=null; index_summary_resize_interval_in_minutes=60; initial_token=null; inter_dc_stream_throughput_outbound_megabits_per_sec=200; inter_dc_tcp_nodelay=false; internode_authenticator=null; internode_compression=dc; internode_recv_buff_size_in_bytes=0; internode_send_buff_size_in_bytes=0; key_cache_keys_to_save=2147483647; key_cache_save_period=14400; key_cache_size_in_mb=null; listen_address=10.100.100.213; listen_interface=null; listen_interface_prefer_ipv6=false; listen_on_broadcast_address=false; max_hint_window_in_ms=10800000; max_hints_delivery_threads=2; max_hints_file_size_in_mb=128; max_mutation_size_in_kb=null; max_streaming_retries=3; max_value_size_in_mb=256; memtable_allocation_type=heap_buffers; memtable_cleanup_threshold=null; memtable_flush_writers=0; memtable_heap_space_in_mb=null; memtable_offheap_space_in_mb=null; min_free_space_per_drive_in_mb=50; native_transport_max_concurrent_connections=-1; native_transport_max_concurrent_connections_per_ip=-1; native_transport_max_frame_size_in_mb=256; native_transport_max_threads=128; native_transport_port=9042; native_transport_port_ssl=null; num_tokens=256; otc_coalescing_strategy=TIMEHORIZON; otc_coalescing_window_us=200; partitioner=org.apache.cassandra.dht.Murmur3Partitioner; permissions_cache_max_entries=1000; permissions_update_interval_in_ms=-1; permissions_validity_in_ms=2000; phi_convict_threshold=8.0; prepared_statements_cache_size_mb=null; range_request_timeout_in_ms=6000000; read_request_timeout_in_ms=6000000; request_scheduler=org.apache.cassandra.scheduler.NoScheduler; request_scheduler_id=null; request_scheduler_options=null; request_timeout_in_ms=6000000; role_manager=CassandraRoleManager; roles_cache_max_entries=1000; roles_update_interval_in_ms=-1; roles_validity_in_ms=2000; row_cache_class_name=org.apache.cassandra.cache.OHCProvider; row_cache_keys_to_save=2147483647; row_cache_save_period=0; row_cache_size_in_mb=0; rpc_address=10.100.100.213; rpc_interface=null; rpc_interface_prefer_ipv6=false; rpc_keepalive=true; rpc_listen_backlog=50; rpc_max_threads=2147483647; rpc_min_threads=16; rpc_port=9160; rpc_recv_buff_size_in_bytes=null; rpc_send_buff_size_in_bytes=null; rpc_server_type=sync; saved_caches_directory=/mnt/cassandra/saved_caches; seed_provider=org.apache.cassandra.locator.SimpleSeedProvider{seeds=10.100.100.19, 10.100.100.85, 10.100.100.185, 10.100.100.161, 10.100.100.52, 10.100.1000.213}; server_encryption_options=<REDACTED>; slow_query_log_timeout_in_ms=6000000; snapshot_before_compaction=false; ssl_storage_port=7001; sstable_preemptive_open_interval_in_mb=50; start_native_transport=true; start_rpc=false; storage_port=7000; stream_throughput_outbound_megabits_per_sec=200; streaming_keep_alive_period_in_secs=300; streaming_socket_timeout_in_ms=86400000; thrift_framed_transport_size_in_mb=15; thrift_max_message_length_in_mb=16; thrift_prepared_statements_cache_size_mb=null; tombstone_failure_threshold=100000; tombstone_warn_threshold=1000; tracetype_query_ttl=86400; tracetype_repair_ttl=604800; transparent_data_encryption_options=org.apache.cassandra.config.TransparentDataEncryptionOptions@38c5cc4c; trickle_fsync=false; trickle_fsync_interval_in_kb=10240; truncate_request_timeout_in_ms=6000000; unlogged_batch_across_partitions_warn_threshold=10; user_defined_function_fail_timeout=1500; user_defined_function_warn_timeout=500; user_function_timeout_policy=die; windows_timer_interval=1; write_request_timeout_in_ms=6000000] Thanks On 04/06/2017 11:30 AM, benjamin roth wrote: > Have you checked the effective limits of a running CS process? > Is CS run as Cassandra? Just to rule out missing file perms. > > > Am 06.04.2017 12:24 schrieb "Cogumelos Maravilha" > <cogumelosmaravi...@sapo.pt <mailto:cogumelosmaravi...@sapo.pt>>: > > From cassandra.yaml: > > hints_directory: /mnt/cassandra/hints > data_file_directories: > - /mnt/cassandra/data > commitlog_directory: /mnt/cassandra/commitlog > saved_caches_directory: /mnt/cassandra/saved_caches > > drwxr-xr-x 3 cassandra cassandra 23 Apr 5 16:03 mnt/ > > drwxr-xr-x 6 cassandra cassandra 68 Apr 5 16:17 ./ > drwxr-xr-x 3 cassandra cassandra 23 Apr 5 16:03 ../ > drwxr-xr-x 2 cassandra cassandra 80 Apr 6 10:07 commitlog/ > drwxr-xr-x 8 cassandra cassandra 124 Apr 5 16:17 data/ > drwxr-xr-x 2 cassandra cassandra 72 Apr 5 16:20 hints/ > drwxr-xr-x 2 cassandra cassandra 49 Apr 5 20:17 saved_caches/ > > cassand+ 2267 1 99 10:18 ? 00:02:56 java > -Xloggc:/var/log/cassandra/gc.log -ea -XX:+UseThreadPriorities > -XX:Threa... > > /dev/mapper/um_vg-xfs_lv 885G 27G 858G 4% /mnt > > On /etc/security/limits.conf > > * - memlock unlimited > * - nofile 100000 > * - nproc 32768 > * - as unlimited > > On /etc/security/limits.d/cassandra.conf > > cassandra - memlock unlimited > cassandra - nofile 100000 > cassandra - as unlimited > cassandra - nproc 32768 > > On /etc/sysctl.conf > > vm.max_map_count = 1048575 > > On /etc/systcl.d/cassanda.conf > > vm.max_map_count = 1048575 > net.ipv4.tcp_keepalive_time=600 > > On /etc/pam.d/su > ... > session required pam_limits.so > ... > > Distro is the currently Ubuntu LTS. > Thanks > > > > On 04/06/2017 10:39 AM, benjamin roth wrote: >> Cassandra cannot write an SSTable to disk. Are you sure the >> disk/volume where SSTables reside (normally >> /var/lib/cassandra/data) is writeable for the CS user and has >> enough free space? >> The CDC warning also implies that. >> The other warnings indicate you are probably not running CS as >> root and you did not set an appropriate limit for max open files. >> Running out of open files can also be a reason for the IO error. >> >> 2017-04-06 11:34 GMT+02:00 Cogumelos Maravilha >> <cogumelosmaravi...@sapo.pt <mailto:cogumelosmaravi...@sapo.pt>>: >> >> Hi list, >> >> I'm using C* 3.10 in a 6 nodes cluster RF=2. All instances type >> i3.xlarge (AWS) with 32GB, 2 cores and SSD LVM XFS formated >> 885G. I have >> one node that is always dieing and I don't understand why. >> Can anyone >> give me some hints please. All nodes using the same >> configuration. >> >> Thanks in advance. >> >> INFO [IndexSummaryManager:1] 2017-04-06 05:22:18,352 >> IndexSummaryRedistribution.java:75 - Redistributing index >> summaries >> ERROR [MemtablePostFlush:22] 2017-04-06 06:00:26,800 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:22,5,main] >> org.apache.cassandra.io >> <http://org.apache.cassandra.io>.FSWriteError: >> java.io.IOException: Input/output >> error >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncInternal(SequentialWriter.java:185) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter.access$100(CompressedSequentialWriter.java:38) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter$TransactionalProxy.doPrepare(CompressedSequentialWriter.java:307) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.prepareToCommit(SequentialWriter.java:358) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.big.BigTableWriter$TransactionalProxy.doPrepare(BigTableWriter.java:367) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.SSTableWriter.prepareToCommit(SSTableWriter.java:281) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.SimpleSSTableMultiWriter.prepareToCommit(SimpleSSTableMultiWriter.java:101) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1153) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1086) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> ~[na:1.8.0_121] >> at >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> [na:1.8.0_121] >> at >> >> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:79) >> [apache-cassandra-3.10.jar:3.10] >> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121] >> Caused by: java.io.IOException: Input/output error >> at sun.nio.ch.FileDispatcherImpl.force0(Native Method) >> ~[na:1.8.0_121] >> at >> sun.nio.ch.FileDispatcherImpl.force(FileDispatcherImpl.java:76) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:388) >> ~[na:1.8.0_121] >> at >> org.apache.cassandra.utils.SyncUtil.force(SyncUtil.java:158) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:169) >> ~[apache-cassandra-3.10.jar:3.10] >> ... 15 common frames omitted >> INFO [IndexSummaryManager:1] 2017-04-06 06:22:18,366 >> IndexSummaryRedistribution.java:75 - Redistributing index >> summaries >> ERROR [MemtablePostFlush:31] 2017-04-06 06:39:19,525 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:31,5,main] >> org.apache.cassandra.io >> <http://org.apache.cassandra.io>.FSWriteError: >> java.io.IOException: Input/output >> error >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncInternal(SequentialWriter.java:185) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter.access$100(CompressedSequentialWriter.java:38) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.compress.CompressedSequentialWriter$TransactionalProxy.doPrepare(CompressedSequentialWriter.java:307) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.prepareToCommit(SequentialWriter.java:358) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.big.BigTableWriter$TransactionalProxy.doPrepare(BigTableWriter.java:367) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.utils.concurrent.Transactional$AbstractTransactional.prepareToCommit(Transactional.java:173) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.format.SSTableWriter.prepareToCommit(SSTableWriter.java:281) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> org.apache.cassandra.io >> >> <http://org.apache.cassandra.io>.sstable.SimpleSSTableMultiWriter.prepareToCommit(SimpleSSTableMultiWriter.java:101) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1153) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1086) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >> ~[na:1.8.0_121] >> at >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >> [na:1.8.0_121] >> at >> >> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:79) >> [apache-cassandra-3.10.jar:3.10] >> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121] >> Caused by: java.io.IOException: Input/output error >> at sun.nio.ch.FileDispatcherImpl.force0(Native Method) >> ~[na:1.8.0_121] >> at >> sun.nio.ch.FileDispatcherImpl.force(FileDispatcherImpl.java:76) >> ~[na:1.8.0_121] >> at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:388) >> ~[na:1.8.0_121] >> at >> org.apache.cassandra.utils.SyncUtil.force(SyncUtil.java:158) >> ~[apache-cassandra-3.10.jar:3.10] >> at >> >> org.apache.cassandra.io.util.SequentialWriter.syncDataOnlyInternal(SequentialWriter.java:169) >> ~[apache-cassandra-3.10.jar:3.10] >> ... 15 common frames omitted >> INFO [main] 2017-04-06 07:11:57,289 >> YamlConfigurationLoader.java:89 - >> Configuration location: file:/etc/cassandra/cassandra.yaml >> >> >> Some ERRORs messages: >> >> ERROR [MemtablePostFlush:2] 2017-04-05 23:35:46,339 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:2,5,main] >> ERROR [MemtablePostFlush:3] 2017-04-05 23:44:08,471 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:3,5,main] >> ERROR [MemtablePostFlush:4] 2017-04-05 23:54:41,224 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:4,5,main] >> ERROR [MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>] 2017-04-06 03:19:13,453 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>,5,main] >> ERROR [epollEventLoopGroup-2-6] 2017-04-06 03:24:41,006 >> CassandraDaemon.java:229 - Exception in thread >> Thread[epollEventLoopGroup-2-6,10,main] >> ERROR [Native-Transport-Requests-36] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-49] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [IndexSummaryManager:1] 2017-04-06 03:25:45,915 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-69] 2017-04-06 03:25:45,916 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-46] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [SharedPool-Worker-136] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-156] 2017-04-06 03:26:18,465 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [SharedPool-Worker-92] 2017-04-06 03:26:24,696 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-48] 2017-04-06 03:26:24,696 >> ?:? - JVM >> state determined to be unstable. Exiting forcefully due to: >> ERROR [Native-Transport-Requests-66] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-77] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [GossipTasks:1] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-133] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-135] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [ScheduledFastTasks:1] 2017-04-06 03:26:55,808 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-70] 2017-04-06 03:27:11,569 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [IndexSummaryManager:1] 2017-04-06 03:27:17,821 >> CassandraDaemon.java:229 - Exception in thread >> Thread[IndexSummaryManager:1,1,main] >> ERROR [Native-Transport-Requests-103] 2017-04-06 03:27:24,049 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-69] 2017-04-06 03:27:24,049 >> SEPWorker.java:145 - Failed to execute task, unexpected >> exception killed >> worker: {} >> ERROR [SharedPool-Worker-98] 2017-04-06 03:27:24,049 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [MessagingService-Incoming-/10.0.120.52 >> <http://10.0.120.52>] 2017-04-06 03:27:55,079 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [epollEventLoopGroup-2-5] 2017-04-06 03:27:55,079 >> JVMStabilityInspector.java:142 - JVM state determined to be >> unstable. >> Exiting forcefully due to: >> ERROR [Native-Transport-Requests-64] 2017-04-06 03:28:43,285 >> SEPWorker.java:145 - Failed to execute task, unexpected >> exception killed >> worker: {} >> ERROR [MemtablePostFlush:22] 2017-04-06 06:00:26,800 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:22,5,main] >> ERROR [MemtablePostFlush:31] 2017-04-06 06:39:19,525 >> CassandraDaemon.java:229 - Exception in thread >> Thread[MemtablePostFlush:31,5,main] >> >> Also some WARNs: >> >> WARN [main] 2017-04-06 09:26:49,725 CLibrary.java:178 - >> Unable to lock >> JVM memory (ENOMEM). This can result in part of the JVM being >> swapped >> out, especially with mmapped I/O enabled. Increase >> RLIMIT_MEMLOCK or run >> Cassandra as root. >> >> WARN [main] 2017-04-06 09:25:07,355 StartupChecks.java:157 - >> JMX is not >> enabled to receive remote connections. Please see >> cassandra-env.sh for >> more info. >> >> WARN [main] 2017-04-06 09:25:07,369 SigarLibrary.java:174 - >> Cassandra >> server running in degraded mode. Is swap disabled? : true, >> Address >> space adequate? : true, nofile limit adequate? : false, >> nproc limit >> adequate? : true >> >> WARN [main] 2017-04-06 09:25:07,091 >> DatabaseDescriptor.java:493 - Small >> cdc volume detected at /var/lib/cassandra/cdc_raw; setting >> cdc_total_space_in_mb to 2502. You can override this in >> cassandra.yaml >> >> >> > >