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support stale-read testcase #416
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Signed-off-by: yisaer <disxiaofei@163.com> add stale-read test Signed-off-by: yisaer <disxiaofei@163.com> add stale-read test Signed-off-by: yisaer <disxiaofei@163.com>
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Signed-off-by: yisaer <disxiaofei@163.com>
Signed-off-by: yisaer <disxiaofei@163.com>
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JmPotato
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Jun 8, 2021
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| setSQL := fmt.Sprintf(`SET TRANSACTION READ ONLY as of timestamp tidb_bounded_staleness('%v', '%v')`, previousStr, nowStr) | ||
| _, err := db.Exec(setSQL) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| rows, err := db.Query("select id, k, c, pad from sbtest0 where k in (?, ?, ?)", rand.Intn(num), rand.Intn(num), rand.Intn(num)) | ||
| defer rows.Close() | ||
| if err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| return nil |
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we don't need to commit here.
testcase/stale-read/bench.go
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| return nil | ||
| } | ||
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| func (c *SysbenchCase) executeSelect(db *sql.DB) error { |
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I think a prepare test case is needed after pingcap/tidb#25156 is merged.
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we can add it after tidb#25156 merged.
testcase/stale-read/bench.go
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| func (c *SysbenchCase) executeSelect(db *sql.DB) error { | ||
| num := c.insertCount * c.rowsEachInsert | ||
| now := time.Now() | ||
| previous := now.Add(-3 * time.Second) |
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What about making the staleness second 3s configurable as a cmd flag?
| } | ||
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| // TODO: assert store read bytes/keys metrics | ||
| func handleStoreMetricsValue(smvms map[string][]StoreMetricsValue, duration time.Duration) { |
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What are you going to do with these metrics data?
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asserting the key/byte loads of store is close with each other.
Signed-off-by: yisaer <disxiaofei@163.com>
JmPotato
reviewed
Jun 10, 2021
testcase/stale-read/bench.go
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| return nil | ||
| } | ||
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| func (c *SysbenchCase) executeSelect(db *sql.DB) error { |
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What problem does this PR solve?
What is changed and how does it work?
Check List
Add stale-read testcases.
Does this PR introduce a user-facing change?: