apache / apache/ignite

Occasional error reporting :Failed to register class

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Dominant language
Java
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Description

An error is occasionally reported when the insert statement is executed in stream mode.
The error stack indicates
org.apache.ignite.internal.jdbc.thin.JdbcThinConnection:1545 | Exception during batch send on streamed connection close
java.sql.BatchUpdateException: Failed to register class.
at org.apache.ignite.internal.jdbc.thin.JdbcThinConnection$StreamState.readResponses(JdbcThinConnection . java: 1567)
at java.Lang.Thread.run(Thread.java:748)

Contributor guide

Open the contributing guide

Research direction

Start by tracing the reported exception through `JdbcThinConnection`, especially `StreamState.readResponses` and the batch-send-on-close path. Reproduce the intermittent failure with streamed inserts and inspect the server-side class registration response; done means identifying and fixing the cause so streamed inserts close without `Failed to register class`.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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