When delete by partition_key, Milvus will generates L0 segments
globally. During L0 Compaction, those L0 segments will touch all
partitions collection wise. Due to the false-positive rate of segment
bloomfilters, L0 compactions will append false deltalogs to completed
irrelevant partitions, which causes *partition deletion amplification.
This PR uses partition_key to set targeted partitionID when producing
deleteMsgs into MsgStreams. This'll narrow down L0 segments scope to
partition level, and remove the false-positive influence
collection-wise.
However, due to DeleteMsg structure, we can only label one partition to
one deleteMsg, so this enhancement fails if user wants to delete over 2
partition_keys in one deletion.
pr: #38231
See also: #34665
Signed-off-by: yangxuan <xuan.yang@zilliz.com>
Cherry pick from master
pr: #38473
The level zero mutex could be remove since all operations are guarded by
segment manager mutex
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
pr: #38436#38454
the task limit in assignSegment/assignChannel will works for both load
task and balance task.
this PR remove the load task limit, only limit balance task num in one
round.
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Signed-off-by: Wei Liu <wei.liu@zilliz.com>
issue: #38142
pr: #38143
current balance channel policy only consider current collection's
distribution, so if all collections has 1 channel, and all channels has
been loaded on same querynode, after querynode num increase, balance
channel won't be triggered.
This PR enable score based balance channel policy, to achieve:
1. distribute all channels evenly across multiple querynodes
2. distribute each collection's channel evenly across multiple
querynodes.
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Signed-off-by: Wei Liu <wei.liu@zilliz.com>
Cherry pick from master
pr: #38375
Related to #38372
This PR make drop partition only check target partition load states only
in case of concurrent releasing other partition in same collection.
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
issue: #38237
pr: #38345
this PR only use better compression level for proto msg which is larger
than 1MB, and use a lighter compression level for smaller proto msg,
which could get a better latency in most case.
this PR could reduce the latency from 22.7s to 4.7s with 10000
collctions and each collections has 1000 segments.
before this PR:
BenchmarkTargetManager-8 1 22781536357 ns/op 566407275088 B/op 11188282
allocs/op
after this PR:
BenchmarkTargetManager-8 1 4729566944 ns/op 36713248864 B/op 10963615
allocs/op
Signed-off-by: Wei Liu <wei.liu@zilliz.com>
issue: #38325
pr: #38342
the old impl only to check grant in default db before drop role, which
may cause role be dropped when grant still exist.
Signed-off-by: Wei Liu <wei.liu@zilliz.com>
enhance :
alterindex delete properties
We have introduced a new parameter deleteKeys to the alterindex
functionality, which allows for the deletion of properties within an
index. This enhancement provides users with the flexibility to manage
index properties more effectively by removing specific keys as needed.
altercollection delete properties
We have introduced a new parameter deleteKeys to the altercollection
functionality, which allows for the deletion of properties within an
collection. This enhancement provides users with the flexibility to
manage collection properties more effectively by removing specific keys
as needed.
3.support altercollectionfield
We currently support modifying the fieldparams of a field in a
collection using altercollectionfield, which only allows changes to the
max-length attribute.
Key Points:
New Parameter - deleteKeys: This new parameter enables the deletion of
specified properties from an index. By passing a list of keys to
deleteKeys, users can remove the corresponding properties from the
index.
Mutual Exclusivity: The deleteKeys parameter cannot be used in
conjunction with the extraParams parameter. Users must choose one
parameter to pass based on their requirement. If deleteKeys is provided,
it indicates an intent to delete properties; if extraParams is provided,
it signifies the addition or update of properties.
issue: https://github.com/milvus-io/milvus/issues/37436
pr: https://github.com/milvus-io/milvus/pull/37437
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Signed-off-by: Xianhui.Lin <xianhui.lin@zilliz.com>
