Kafka Streams LockException: Failed to Lock the State Directory
Kafka Streams throwing LockException: Failed to lock the state directory for task? Here's the exact cause, why it happens, and the fix.
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7 PostsKafka Streams: A Serializer Is Not Compatible to the Actual Type
Kafka Streams throws 'A serializer is not compatible to the actual key or value type' or 'ClassCastException invoking Processor'. Here's the SerDe fix.
Kafka Streams TaskCorruptedException: Fix and Prevent It
Kafka Streams TaskCorruptedException wipes local state and re-restores from the changelog. Here's why it fires under EOS, how to fix it, and how to stop it.
Kafka Streams RocksDBException: Too Many Open Files Fix
Kafka Streams dying with ProcessorStateException and RocksDBException 'Too many open files'? Here's the file-descriptor math and the config setter that fixes it.
Kafka Streams MissingSourceTopicException: Fix It Fast
Kafka Streams dies with MissingSourceTopicException on startup or rebalance. Here's why the assignor flags a missing source topic and how to fix it.
Kafka InvalidStateStoreException: State Store May Have Migrated
Fixing InvalidStateStoreException: "the state store may have migrated to another instance" in Kafka Streams — root causes, retry logic, and the right IQ design.
Kafka Streams Deserialization Exception Handler: Fix the Fail
Kafka Streams dies with 'Deserialization exception handler is set to fail upon a deserialization error.' Here's why one bad record kills the thread and how to fix it.