THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Key tuples are tuples with key columns only. Key columns always come first in the schema. So if there are 2 key columns, first two values of the tuple is the key.
Dynamic schema expansion (Live-schema)
IEP-54: Schema-first Approach includes "dynamic schema expansion" feature, which means that users can insert arbitrary tuples and Ignite will automatically update the schema with extra fields, if any.
To support this feature, we allow a map instead of arr in all write operations.
Handshake
| Request | |
|---|---|
| 4 bytes | Magic number 49 47 4E 49, or "IGNI". Helps identifying misconfigured SSL or other apps probing the port. |
| int | Payload length |
| int | Version major |
| int | Version minor |
| int | Version patch |
| int | Client code (1 for JDBC, 2 for general-purpose client) |
| bin | Features (bitmask) |
| map (string → any) | Extensions (auth, attributes, etc). Server can skip unknown extension data (when client is newer). |
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