Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

executor: compute ADMIN CHECKSUM for partitioned tables correctly #11089

Merged
merged 2 commits into from
Jul 15, 2019
Merged

executor: compute ADMIN CHECKSUM for partitioned tables correctly #11089

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
9af86df
executor: compute ADMIN CHECKSUM for partitioned tables correctly
kennytm Jul 4, 2019
3016cb4
Merge branch 'master' into checksum-partitioned-table
kennytm Jul 15, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
44 changes: 32 additions & 12 deletions executor/checksum.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -187,27 +187,47 @@ func newChecksumContext(db *model.DBInfo, table *model.TableInfo, startTs uint64
}

func (c *checksumContext) BuildRequests(ctx sessionctx.Context) ([]*kv.Request, error) {
reqs := make([]*kv.Request, 0, len(c.TableInfo.Indices)+1)
req, err := c.buildTableRequest(ctx)
if err != nil {
var partDefs []model.PartitionDefinition
if part := c.TableInfo.Partition; part != nil {
partDefs = part.Definitions
}

reqs := make([]*kv.Request, 0, (len(c.TableInfo.Indices)+1)*(len(partDefs)+1))
if err := c.appendRequest(ctx, c.TableInfo.ID, &reqs); err != nil {
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Can we save the request to the table when it is a partitioned table since it won't have any data?

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Yes we could (add an if clause), but since the range contains no data I think the overhead would be small. OTOH if we do want to support global index, I suppose those indices will be placed in the table itself, so we still need to appendRequest(c.TableInfo.ID).

return nil, err
}
reqs = append(reqs, req)

for _, partDef := range partDefs {
if err := c.appendRequest(ctx, partDef.ID, &reqs); err != nil {
return nil, err
}
}

return reqs, nil
}

func (c *checksumContext) appendRequest(ctx sessionctx.Context, tableID int64, reqs *[]*kv.Request) error {
req, err := c.buildTableRequest(ctx, tableID)
if err != nil {
return err
}

*reqs = append(*reqs, req)
for _, indexInfo := range c.TableInfo.Indices {
if indexInfo.State != model.StatePublic {
continue
}
req, err = c.buildIndexRequest(ctx, indexInfo)
req, err = c.buildIndexRequest(ctx, tableID, indexInfo)
if err != nil {
return nil, err
return err
}
reqs = append(reqs, req)
*reqs = append(*reqs, req)
}

return reqs, nil
return nil
}

func (c *checksumContext) buildTableRequest(ctx sessionctx.Context) (*kv.Request, error) {
func (c *checksumContext) buildTableRequest(ctx sessionctx.Context, tableID int64) (*kv.Request, error) {
checksum := &tipb.ChecksumRequest{
StartTs: c.StartTs,
ScanOn: tipb.ChecksumScanOn_Table,
Expand All @@ -217,13 +237,13 @@ func (c *checksumContext) buildTableRequest(ctx sessionctx.Context) (*kv.Request
ranges := ranger.FullIntRange(false)

var builder distsql.RequestBuilder
return builder.SetTableRanges(c.TableInfo.ID, ranges, nil).
return builder.SetTableRanges(tableID, ranges, nil).
SetChecksumRequest(checksum).
SetConcurrency(ctx.GetSessionVars().DistSQLScanConcurrency).
Build()
}

func (c *checksumContext) buildIndexRequest(ctx sessionctx.Context, indexInfo *model.IndexInfo) (*kv.Request, error) {
func (c *checksumContext) buildIndexRequest(ctx sessionctx.Context, tableID int64, indexInfo *model.IndexInfo) (*kv.Request, error) {
checksum := &tipb.ChecksumRequest{
StartTs: c.StartTs,
ScanOn: tipb.ChecksumScanOn_Index,
Expand All @@ -233,7 +253,7 @@ func (c *checksumContext) buildIndexRequest(ctx sessionctx.Context, indexInfo *m
ranges := ranger.FullRange()

var builder distsql.RequestBuilder
return builder.SetIndexRanges(ctx.GetSessionVars().StmtCtx, c.TableInfo.ID, indexInfo.ID, ranges).
return builder.SetIndexRanges(ctx.GetSessionVars().StmtCtx, tableID, indexInfo.ID, ranges).
SetChecksumRequest(checksum).
SetConcurrency(ctx.GetSessionVars().DistSQLScanConcurrency).
Build()
Expand Down
11 changes: 11 additions & 0 deletions executor/executor_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -411,6 +411,17 @@ func (s *testSuite) TestAdmin(c *C) {
c.Assert(historyJobs, DeepEquals, historyJobs2)
}

func (s *testSuite) TestAdminChecksumOfPartitionedTable(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("USE test;")
tk.MustExec("DROP TABLE IF EXISTS admin_checksum_partition_test;")
tk.MustExec("CREATE TABLE admin_checksum_partition_test (a INT) PARTITION BY HASH(a) PARTITIONS 4;")
tk.MustExec("INSERT INTO admin_checksum_partition_test VALUES (1), (2);")

r := tk.MustQuery("ADMIN CHECKSUM TABLE admin_checksum_partition_test;")
r.Check(testkit.Rows("test admin_checksum_partition_test 1 5 5"))
}

func (s *testSuite) fillData(tk *testkit.TestKit, table string) {
tk.MustExec("use test")
tk.MustExec(fmt.Sprintf("create table %s(id int not null default 1, name varchar(255), PRIMARY KEY(id));", table))
Expand Down