java.lang.IllegalArgumentException: mapper [args] of different type, current_type [long], merged_type [text]

[magicalbob]

I initialise the logger in my python app like this:

        if log_host == None:
          self.log = logging
          self.log.basicConfig(filename='ctime.log',level=logging.INFO,format='%(asctime)s %(message)s')
        else:
          handler = CMRESHandler(hosts=[{'host': log_host, 'port': int(log_port)}],
                                auth_type=CMRESHandler.AuthType.NO_AUTH,
                                es_index_name=log_index)
          self.log = logging.getLogger("elasticsearch")
          self.log.setLevel(logging.INFO)
          self.log.addHandler(handler)
          self.log.info('started up')

and I get repeated stack traces like this in my elasticsearch:

es01      | "stacktrace": ["java.lang.IllegalArgumentException: mapper [args] of different type, current_type [long], merged_type [text]",
es01      | "at org.elasticsearch.index.mapper.FieldMapper.doMerge(FieldMapper.java:330) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.NumberFieldMapper.doMerge(NumberFieldMapper.java:1081) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.FieldMapper.merge(FieldMapper.java:317) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.FieldMapper.merge(FieldMapper.java:52) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.DocumentParser.createDynamicUpdate(DocumentParser.java:237) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.DocumentParser.parseDocument(DocumentParser.java:83) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.mapper.DocumentMapper.parse(DocumentMapper.java:267) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShard.prepareIndex(IndexShard.java:764) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShard.applyIndexOperation(IndexShard.java:741) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShard.applyIndexOperationOnPrimary(IndexShard.java:713) ~[elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.bulk.TransportShardBulkAction.executeBulkItemRequest(TransportShardBulkAction.java:256) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.bulk.TransportShardBulkAction$2.doRun(TransportShardBulkAction.java:159) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.bulk.TransportShardBulkAction.performOnPrimary(TransportShardBulkAction.java:191) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.bulk.TransportShardBulkAction.shardOperationOnPrimary(TransportShardBulkAction.java:116) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.bulk.TransportShardBulkAction.shardOperationOnPrimary(TransportShardBulkAction.java:77) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction$PrimaryShardReference.perform(TransportReplicationAction.java:927) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.ReplicationOperation.execute(ReplicationOperation.java:108) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction$AsyncPrimaryAction.runWithPrimaryShardReference(TransportReplicationAction.java:398) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction$AsyncPrimaryAction.lambda$doRun$0(TransportReplicationAction.java:316) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:62) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShard.lambda$wrapPrimaryOperationPermitListener$14(IndexShard.java:2525) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.ActionListener$3.onResponse(ActionListener.java:112) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShardOperationPermits.acquire(IndexShardOperationPermits.java:269) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShardOperationPermits.acquire(IndexShardOperationPermits.java:236) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.index.shard.IndexShard.acquirePrimaryOperationPermit(IndexShard.java:2499) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction.acquirePrimaryOperationPermit(TransportReplicationAction.java:864) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction$AsyncPrimaryAction.doRun(TransportReplicationAction.java:312) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.action.support.replication.TransportReplicationAction.handlePrimaryRequest(TransportReplicationAction.java:275) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.xpack.security.transport.SecurityServerTransportInterceptor$ProfileSecuredRequestHandler$1.doRun(SecurityServerTransportInterceptor.java:250) [x-pack-security-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.xpack.security.transport.SecurityServerTransportInterceptor$ProfileSecuredRequestHandler.messageReceived(SecurityServerTransportInterceptor.java:308) [x-pack-security-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.transport.RequestHandlerRegistry.processMessageReceived(RequestHandlerRegistry.java:63) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.transport.TransportService$7.doRun(TransportService.java:703) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:758) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-7.2.0.jar:7.2.0]",
es01      | "at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]",
es01      | "at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]",
es01      | "at java.lang.Thread.run(Thread.java:835) [?:?]"] }

As far as I can see in Kibana, my app seems to be logging everything fine, I'm just getting massive log files for my elasticsearch cluster.