516bdc7e08
### What changes were proposed in this pull request? As title ### Why are the changes needed? As title ### Does this PR introduce _any_ user-facing change? No ### How was this patch tested? Manual test Closes #1795 from cfmcgrady/sbt-docs. Authored-by: Fu Chen <cfmcgrady@gmail.com> Signed-off-by: Cheng Pan <chengpan@apache.org>
35 lines
1.6 KiB
Markdown
35 lines
1.6 KiB
Markdown
---
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license: |
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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---
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# Worker
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The main functions of Celeborn `Worker` are:
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- Store, serve, and manage `PartitionLocation` data. See [Storage](../../developers/storage)
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- Traffic control through `Back Pressure` and `Congestion Control`. See
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[Traffic Control](../../developers/trafficcontrol)
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- Support rolling upgrade through `Graceful Shutdown`
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- Support elasticity through `Decommission Shutdown`
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- Self health check
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Celeborn `Worker` has four dedicated servers:
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- `Controller` handles control messages, i.e. `ReserveSlots`, `CommitFiles`, and `DestroyWorkerSlots`
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- `Push Server` handles primary input data, i.e. `PushData` and `PushMergedData`, and push related control messages
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- `Replicate Server` handles replica input data, it has the same logic with `Push Server`
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- `Fetch Server` handles fetch requests, i.e. `ChunkFetchRequest`, and fetch related control messages
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