70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
// Copyright 2017 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 ddl_test
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import (
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"bytes"
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"context"
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"sync/atomic"
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"time"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/tidb/ddl"
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"github.com/pingcap/tidb/session"
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"github.com/pingcap/tidb/store/mockstore"
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"github.com/pingcap/tidb/store/tikv"
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"github.com/pingcap/tidb/tablecodec"
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)
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type testDDLTableSplitSuite struct{}
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var _ = Suite(&testDDLTableSplitSuite{})
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func (s *testDDLTableSplitSuite) TestTableSplit(c *C) {
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store, err := mockstore.NewMockTikvStore()
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c.Assert(err, IsNil)
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defer store.Close()
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session.SetSchemaLease(0)
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session.SetStatsLease(0)
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atomic.StoreUint32(&ddl.EnableSplitTableRegion, 1)
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dom, err := session.BootstrapSession(store)
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c.Assert(err, IsNil)
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defer dom.Close()
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atomic.StoreUint32(&ddl.EnableSplitTableRegion, 0)
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infoSchema := dom.InfoSchema()
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c.Assert(infoSchema, NotNil)
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t, err := infoSchema.TableByName(model.NewCIStr("mysql"), model.NewCIStr("tidb"))
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c.Assert(err, IsNil)
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regionStartKey := tablecodec.EncodeTablePrefix(t.Meta().ID)
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type kvStore interface {
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GetRegionCache() *tikv.RegionCache
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}
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var loc *tikv.KeyLocation
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for i := 0; i < 10; i++ {
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cache := store.(kvStore).GetRegionCache()
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loc, err = cache.LocateKey(tikv.NewBackoffer(context.Background(), 5000), regionStartKey)
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c.Assert(err, IsNil)
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// Region cache may be out of date, so we need to drop this expired region and load it again.
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cache.DropRegion(loc.Region)
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if bytes.Equal(loc.StartKey, []byte(regionStartKey)) {
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return
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}
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time.Sleep(3 * time.Millisecond)
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}
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c.Assert(loc.StartKey, BytesEquals, []byte(regionStartKey))
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}
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