Hi Magnus,
Found the debug log
[2015-10-21 13:48:30,065][DEBUG][action.bulk ] [datalake_es] [logstash-2015.10.21][2] failed to execute bulk item (index) index {[logstash-2015.10.21][json][AVCI8QvwKg1WubLfTgfH], source[{"message":"{\"address\":\"abcde\",\"b\":553,\"timestamp\":1425094186000}","@version":"1","@timestamp":"2015-10-21T05:48:35.672Z","host":"logstashpubkafka","path":"/var/log/kafka/test","type":"json","address":"abcde","b":553,"timestamp":1425094186000}]}
org.elasticsearch.index.mapper.MapperParsingException: failed to parse [address]
at org.elasticsearch.index.mapper.core.AbstractFieldMapper.parse(AbstractFieldMapper.java:411)
at org.elasticsearch.index.mapper.object.ObjectMapper.serializeValue(ObjectMapper.java:706)
at org.elasticsearch.index.mapper.object.ObjectMapper.parse(ObjectMapper.java:497)
at org.elasticsearch.index.mapper.DocumentMapper.parse(DocumentMapper.java:544)
at org.elasticsearch.index.mapper.DocumentMapper.parse(DocumentMapper.java:493)
at org.elasticsearch.index.shard.IndexShard.prepareCreate(IndexShard.java:466)
at org.elasticsearch.action.bulk.TransportShardBulkAction.shardIndexOperation(TransportShardBulkAction.java:418)
at org.elasticsearch.action.bulk.TransportShardBulkAction.shardOperationOnPrimary(TransportShardBulkAction.java:148)
at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$PrimaryPhase.performOnPrimary(TransportShardReplicationOperationAction.java:574)
at org.elasticsearch.action.support.replication.TransportShardReplicationOperationAction$PrimaryPhase$1.doRun(TransportShardReplicationOperationAction.java:440)
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:36)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NumberFormatException: For input string: "abcde"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:589)
at java.lang.Long.parseLong(Long.java:631)
at org.elasticsearch.common.xcontent.support.AbstractXContentParser.longValue(AbstractXContentParser.java:145)
at org.elasticsearch.index.mapper.core.LongFieldMapper.innerParseCreateField(LongFieldMapper.java:288)
at org.elasticsearch.index.mapper.core.NumberFieldMapper.parseCreateField(NumberFieldMapper.java:239)
at org.elasticsearch.index.mapper.core.AbstractFieldMapper.parse(AbstractFieldMapper.java:401)
... 13 more