Hi, There is an invalid IP in the String. .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};
Regards Hartmut From: Chris Mawata [mailto:chris.maw...@gmail.com] Sent: Montag, 10. April 2017 13:37 To: user@cassandra.apache.org Subject: Re: Node always dieing Notice .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}; Why do you have all six of your nodes as seeds? is it possible that the last one you added used itself as the seed and is isolated? On Thu, Apr 6, 2017 at 6:48 AM, Cogumelos Maravilha <cogumelosmaravi...@sapo.pt<mailto:cogumelosmaravi...@sapo.pt>> wrote: 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<http://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<mailto: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