THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Field | Description |
|---|---|
Topic | The topic this response entry corresponds to. |
Partition | The partition this response entry corresponds to. |
ErrorCode | The error from this partition, if any. Errors are given on a per-partition basis because a given partition may be unavailable or maintained on a different host, while others may have successfully accepted the produce request. |
Offset | The offset assigned to the first message in the message set appended to this partition. |
Possible Error Codes: (TODO)
Fetch API
The fetch API is used to fetch a chunk of one or more logs for some topic-partitions. Logically one specifies the topics, partitions, and starting offset at which to begin the fetch and gets back a chunk of messages. In general, the return messages will have offsets larger than or equal to the starting offset. However, with compressed messages, it's possible for the returned messages to have offsets smaller than the starting offset. The number of such messages is typically small and the caller is responsible for filtering out those messages.
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Field | Description |
|---|---|
TopicName | The name of the topic this response entry is for. |
Partition | The id of the partition this response is for. |
HighwaterMarkOffset | The offset at the end of the log for this partition. This can be used by the client to determine how many messages behind the end of the log they are. |
MessageSetSize | The size in bytes of the message set for this partition |
MessageSet | The message data fetched from this partition, in the format described above. |
Possible Error Codes
OFFSET_OUT_OF_RANGE (1), UNKNOWN_TOPIC_OR_PARTITION (3), NOT_LEADER_FOR_PARTITION (6), REPLICA_NOT_AVAILABLE (9), UNKNOWN (-1)
Offset API
This API describes the valid offset range available for a set of topic-partitions. As with the produce and fetch APIs requests must be directed to the broker that is currently the leader for the partitions in question. This can be determined using the metadata API.
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