36 lines
1.3 KiB
Go
36 lines
1.3 KiB
Go
// Copyright 2016 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tikv
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import (
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"github.com/juju/errors"
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)
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var (
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// errInnerRetryable if caller can retry this directly then return this error.
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errInnerRetryable = errors.New("try again innerly")
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// errInvalidResponse represents response message is invalid.
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errInvalidResponse = errors.New("invalid response")
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// errBodyMissing response body is missing error
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errBodyMissing = errors.New("response body is missing")
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)
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// TiDB decides whether to retry transaction by checking if error message contains
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// string "try again later" literally.
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// In TiClient we use `errors.Annotate(err, txnRetryableMark)` to direct TiDB to
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// restart a transaction.
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// Note that it should be only used if i) the error occurs inside a transaction
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// and ii) the error is not totally unexpected and hopefully will recover soon.
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const txnRetryableMark = "[try again later]"
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