[datacoord/index_service.go:86] ["segment is level zero, skip create indexes"] [segmentID=455364181451234378]

[rere950303]

• milvus version: 2.4.20
• milvus mode: cluster

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I keep seeing the following warning logs every minute. Will this issue resolve itself over time, or is it a bug?

[datacoord/index_service.go:86] ["segment is level zero, skip create indexes"] [segmentID=455364181451234378]

[rere950303]

@yhmo could you check this issue plz 🙇 ?! should i restart datacoord pod?

[yhmo]

"segment is level zero, skip create indexes" is a DEBUG level log, you can ignore it.

Level 0 segment is a special segment only contains the ids for delete operations, no need to build index.

[rere950303]

@yhmo

its warning level log. The log keeps occurring every minute. How can I stop it?

[rere950303]

Even if it's at a warning level, can we just ignore it?

[yhmo]

In 2.5.4, it is a DEBUG level log:

milvus/internal/datacoord/index_service.go

Line 90 in 6cdabd9

log.Ctx(ctx).Debug("segment is level zero, skip create indexes", zap.Int64("segmentID", segment.GetID()))

In 2.4.22, it is a WARN level log:

milvus/internal/datacoord/index_service.go

Line 88 in 6eb73d1

log.Warn("segment is level zero, skip create indexes", zap.Int64("segmentID", segment.GetID()))

I believe it should be debug level.

[rere950303]

• [Feature]: LevelZero Segment #27349
• fix: Trigger l0 compaction when l0 views don't change  #30729

@yhmo
considering above issues,
I also think the debug level is appropriate. I will ignore the warning log. Thank you.