unable run elassandra when updating 6.2.3.27 -> 6.8.4.4

[jhekau]

Elassandra version: 6.2.3.27

JVM version (java -version):
openjdk version "1.8.0_252"
OpenJDK Runtime Environment (AdoptOpenJDK)(build 1.8.0_252-b09)
OpenJDK 64-Bit Server VM (AdoptOpenJDK)(build 25.252-b09, mixed mode)

OS version (uname -a):
Linux db-cass 4.9.0-12-amd64 #1 SMP Debian 4.9.210-1 (2020-01-20) x86_64 GNU/Linux

Description of the problem including expected versus actual behavior:

[main] ElassandraDaemon.java:601 main Exception
java.lang.NullPointerException: null
	at java.util.Objects.requireNonNull(Objects.java:203)
	at org.elasticsearch.common.network.NetworkAddress.format(NetworkAddress.java:93)
	at org.elasticsearch.common.network.NetworkAddress.format(NetworkAddress.java:69)
	at org.elassandra.discovery.CassandraDiscovery$GossipCluster.lambda$update$0(CassandraDiscovery.java:355)
	at java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853)
	at org.elassandra.discovery.CassandraDiscovery$GossipCluster.update(CassandraDiscovery.java:335)
	at org.elassandra.discovery.CassandraDiscovery$GossipCluster.update(CassandraDiscovery.java:310)
	at org.elassandra.discovery.CassandraDiscovery.doStart(CassandraDiscovery.java:446)
	at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:72)
	at org.elasticsearch.node.Node.start(Node.java:797)
	at org.apache.cassandra.service.ElassandraDaemon.activate(ElassandraDaemon.java:215)
	at org.apache.cassandra.service.ElassandraDaemon.main(ElassandraDaemon.java:567)

/etc/cassandra/cassandra.yaml:

cluster_name: 'cluster'

num_tokens: 256
hinted_handoff_enabled: true
max_hint_window_in_ms: 10800000
hinted_handoff_throttle_in_kb: 1024
hints_flush_period_in_ms: 10000
max_hints_file_size_in_mb: 128
role_manager: CassandraRoleManager

partitioner: org.apache.cassandra.dht.Murmur3Partitioner
cdc_enabled: false

counter_cache_save_period: 7200

commitlog_sync: periodic
commitlog_sync_period_in_ms: 10000
commitlog_segment_size_in_mb: 32

seed_provider:
    - class_name: org.apache.cassandra.locator.SimpleSeedProvider
      parameters:
          - seeds: "10.10.1.11"

concurrent_reads: 32
concurrent_writes: 32
concurrent_counter_writes: 32

concurrent_materialized_view_writes: 32
memtable_allocation_type: heap_buffers

index_summary_resize_interval_in_minutes: 60
trickle_fsync: false
trickle_fsync_interval_in_kb: 10240
storage_port: 7000
ssl_storage_port: 7001

listen_address: 10.10.1.10
broadcast_address: 10.10.1.10

start_native_transport: true
native_transport_port: 9042

start_rpc: false
rpc_address: 10.10.1.10
rpc_port: 9160
rpc_keepalive: true
rpc_server_type: sync

thrift_framed_transport_size_in_mb: 15
incremental_backups: false
snapshot_before_compaction: false
auto_snapshot: true
column_index_size_in_kb: 64
column_index_cache_size_in_kb: 2
compaction_throughput_mb_per_sec: 16
sstable_preemptive_open_interval_in_mb: 50

read_request_timeout_in_ms: 50000
range_request_timeout_in_ms: 20000
write_request_timeout_in_ms: 20000
counter_write_request_timeout_in_ms: 5000
cas_contention_timeout_in_ms: 5000
truncate_request_timeout_in_ms: 60000
request_timeout_in_ms: 50000

slow_query_log_timeout_in_ms: 500

cross_node_timeout: false

streaming_socket_timeout_in_ms: 86400000

endpoint_snitch: SimpleSnitch

dynamic_snitch_update_interval_in_ms: 100
dynamic_snitch_reset_interval_in_ms: 600000
dynamic_snitch_badness_threshold: 0.1

request_scheduler: org.apache.cassandra.scheduler.NoScheduler

internode_compression: dc
inter_dc_tcp_nodelay: false
tracetype_query_ttl: 86400
tracetype_repair_ttl: 604800
enable_user_defined_functions: false
enable_scripted_user_defined_functions: false
enable_materialized_views: false
windows_timer_interval: 1

tombstone_warn_threshold: 1000
tombstone_failure_threshold: 100000
batch_size_warn_threshold_in_kb: 5
batch_size_fail_threshold_in_kb: 50
unlogged_batch_across_partitions_warn_threshold: 10
compaction_large_partition_warning_threshold_mb: 100
gc_warn_threshold_in_ms: 1000

back_pressure_enabled: false
back_pressure_strategy:
    - class_name: org.apache.cassandra.net.RateBasedBackPressure
      parameters:
        - high_ratio: 0.90
          factor: 5
          flow: FAST

/etc/hosts:

127.0.0.1	localhost
::1		localhost ip6-localhost ip6-loopback
ff02::1		ip6-allnodes
ff02::2		ip6-allrouters

::1 db-cass db-cass
127.0.0.1 db-cass db-cass

Steps to reproduce:

current working version:

 "version" : {
      "number" : "6.2.3",
      "build_hash" : "706ae71",
      "build_date" : "2020-04-15T15:17:02.601140Z",
      "build_snapshot" : false,
      "lucene_version" : "7.2.1",
      "minimum_wire_compatibility_version" : "5.6.0",
      "minimum_index_compatibility_version" : "5.0.0"
 },

update:

$ service cassandra stop
$ apt install elassandra_6.8.4.4_all.deb
$ service cassandra start

[vroyer]

The java.lang.NullPointerException happens in a debug message because you have an RPC or Internal ip address not set in your cluster gossip state, probably because your seed address does not match your broadcast address in your single node cluster config.

Moreover, you should set num_token=8 rather than 256 in your config to get better search performances.

Thanks for reporting this issue.