Kafka Error INVALID_TXN_STATE
Error code 48 · Non-retriable Transactions
The producer attempted a transactional operation in an invalid state.
Common Causes
- Application called commitTransaction() or abortTransaction() on a producer that has not called beginTransaction() yet, or after a previous fatal error
- Producer sent a transactional produce request before calling initTransactions(), missing the required coordinator registration step
- Transaction coordinator received a request out of the expected sequence (e.g., AddPartitionsToTxn before InitProducerId)
Solutions
- Follow the strict transactional API call order: initTransactions() → beginTransaction() → send() → commitTransaction()/abortTransaction()
- After a ProducerFencedException or OutOfOrderSequenceException, do not attempt to use the same producer — close it and create a new one
- Add state tracking in your application to prevent calling transaction APIs in the wrong order; wrap in a state machine if needed
Diagnostic Commands
# Look for transaction events in logs
grep 'INVALID_TXN_STATE\|InvalidTxnState\|transaction state' /var/log/kafka/server.log | tail -20
# Look for transaction events in logs
grep 'initTransactions\|beginTransaction\|commitTransaction\|abortTransaction' /var/log/kafka/app.log | tail -30Related APIs
This error can be returned by: AddOffsetsToTxn · AddPartitionsToTxn · EndTxn · InitProducerId · Produce
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