Question 121804 in Redis Question posted in
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How do I clear the PEL list for a consumer group in Redis

I would like to know how to clear the PEL list for a given Redis consumer group without individually acknowledging every message.

Context
I have a consumer group for my one of my Redis streams. For testing purposes, I need to clear the PEL list of the consumer group without deleting the stream.

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2

Answers


  1. 0

    From a consumer view, you can use XPENDING to know which are the message-ids list that are not yet acknowledged. Then using XCLAIM you can claim a specific message.

    There is also XAUTOCLAIM command, which composes XPENDING and XCLAIM for every message in the group.

    Anyway by design the message is in a PEL and it’s removed only when it’s acknowledged, claimed by another consumer or deleted from the stream.

    XPENDING

    XCLAIM

    XAUTOCLAIM

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  2. 0

    Redis doesn’t implement any command to do that functionality. Only way to remove entries from the PEL of a consumer is to ACK each pending message individually.

    This thread explains why deleted messages from a stream still are part of a PEL.

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