If you are using persistent queue, you are likely to see following errors in splunkd.log
ERROR TcpInputProc - Encountered Streaming S2S error
1. "Cannot register new_channel"
2. "Invalid payload_size"
3. "Too many bytes_used"
4. "Message rejected. Received unexpected message of size"
5. "not a valid combined field name/value type for data received"
Many other streaming S2S streaming errors.
If your deployment is impacted, you should upgrade your HF/IHF/IUF/IDX instance that is using persistent queue to following patches.
9.3.2/9.2.4/9.1.7
This patch also fixes all the PQ related crashes and other PQ issues.
With 9.3.2/9.2.4/9.1.7 there are no known PQ issues.