TrueCloudLab/frostfs-sdk-go
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Initial EC implementation #205

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fyrchik merged 4 commits from fyrchik/frostfs-sdk-go:erasure-code into master 2024-03-22 10:14:13 +00:00
Conversation 0 Commits 4 Files changed 27 +728 -344
13 changed files with 728 additions and 344 deletions
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26
netmap/netmap.go
View file

@ -209,6 +209,25 @@ func (m NetMap) SelectFilterNodes(expr *SelectFilterExpr) ([][]NodeInfo, error)
return ret, nil
}
func countNodes(r netmap.Replica) uint32 {
if r.GetCount() != 0 {
return r.GetCount()
}
return r.GetECDataCount() + r.GetECParityCount()
}
func (p PlacementPolicy) isUnique() bool {
if p.unique {
return true
}
for _, r := range p.replicas {
if r.GetECDataCount() != 0 || r.GetECParityCount() != 0 {
return true
}
}
return false
}
// ContainerNodes returns two-dimensional list of nodes as a result of applying
// given PlacementPolicy to the NetMap. Each line of the list corresponds to a
// replica descriptor. Line order corresponds to order of ReplicaDescriptor list
@ -230,6 +249,7 @@ func (m NetMap) ContainerNodes(p PlacementPolicy, pivot []byte) ([][]NodeInfo, e
return nil, err
}
unique := p.isUnique()
result := make([][]NodeInfo, len(p.replicas))
// Note that the cached selectors are not used when the policy contains the UNIQUE flag.
@ -240,7 +260,7 @@ func (m NetMap) ContainerNodes(p PlacementPolicy, pivot []byte) ([][]NodeInfo, e
sName := p.replicas[i].GetSelector()
if sName == "" && !(len(p.replicas) == 1 && len(p.selectors) == 1) {
var s netmap.Selector
s.SetCount(p.replicas[i].GetCount())
s.SetCount(countNodes(p.replicas[i]))
s.SetFilter(mainFilterName)
nodes, err := c.getSelection(s)
@ -250,14 +270,14 @@ func (m NetMap) ContainerNodes(p PlacementPolicy, pivot []byte) ([][]NodeInfo, e
result[i] = append(result[i], flattenNodes(nodes)...)
if p.unique {
if unique {
c.addUsedNodes(result[i]...)
}
continue
}
if p.unique {
if unique {
if c.processedSelectors[sName] == nil {
return nil, fmt.Errorf("selector not found: '%s'", sName)
}

6
netmap/parser/Query.g4
View file

@ -4,10 +4,14 @@ options {
tokenVocab = QueryLexer;
}
policy: UNIQUE? repStmt+ cbfStmt? selectStmt* filterStmt* EOF;
policy: UNIQUE? (repStmt | ecStmt)+ cbfStmt? selectStmt* filterStmt* EOF;
selectFilterExpr: cbfStmt? selectStmt? filterStmt* EOF;
ecStmt:
EC Data = NUMBER1 DOT Parity = NUMBER1 // erasure code configuration
(IN Selector = ident)?; // optional selector name
repStmt:
REP Count = NUMBER1 // number of object replicas
(IN Selector = ident)?; // optional selector name

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netmap/parser/Query.interp
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netmap/parser/Query.tokens
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2
netmap/parser/QueryLexer.g4
View file

@ -7,6 +7,7 @@ SIMPLE_OP : 'EQ' | 'NE' | 'GE' | 'GT' | 'LT' | 'LE';
UNIQUE : 'UNIQUE';
REP : 'REP';
EC : 'EC';
IN : 'IN';
AS : 'AS';
CBF : 'CBF';
@ -14,6 +15,7 @@ SELECT : 'SELECT';
FROM : 'FROM';
FILTER : 'FILTER';
WILDCARD : '*';
DOT : '.';
CLAUSE_SAME : 'SAME';
CLAUSE_DISTINCT : 'DISTINCT';

BIN
netmap/parser/QueryLexer.interp
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netmap/parser/QueryLexer.tokens
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6
netmap/parser/query_base_visitor.go
View file

@ -1,4 +1,4 @@
// Code generated from Query.g4 by ANTLR 4.13.0. DO NOT EDIT.
// Code generated from /repo/frostfs/sdk-go/netmap/parser/Query.g4 by ANTLR 4.13.0. DO NOT EDIT.
package parser // Query
@ -16,6 +16,10 @@ func (v *BaseQueryVisitor) VisitSelectFilterExpr(ctx *SelectFilterExprContext) i
return v.VisitChildren(ctx)
}
func (v *BaseQueryVisitor) VisitEcStmt(ctx *EcStmtContext) interface{} {
return v.VisitChildren(ctx)
}
func (v *BaseQueryVisitor) VisitRepStmt(ctx *RepStmtContext) interface{} {
return v.VisitChildren(ctx)
}

242
netmap/parser/query_lexer.go
View file

@ -1,4 +1,4 @@
// Code generated from QueryLexer.g4 by ANTLR 4.13.0. DO NOT EDIT.
// Code generated from /repo/frostfs/sdk-go/netmap/parser/QueryLexer.g4 by ANTLR 4.13.0. DO NOT EDIT.
package parser
@ -43,119 +43,123 @@ func querylexerLexerInit() {
"DEFAULT_MODE",
}
staticData.LiteralNames = []string{
"", "'NOT'", "'AND'", "'OR'", "", "'UNIQUE'", "'REP'", "'IN'", "'AS'",
"'CBF'", "'SELECT'", "'FROM'", "'FILTER'", "'*'", "'SAME'", "'DISTINCT'",
"'('", "')'", "'@'", "", "", "'0'",
"", "'NOT'", "'AND'", "'OR'", "", "'UNIQUE'", "'REP'", "'EC'", "'IN'",
"'AS'", "'CBF'", "'SELECT'", "'FROM'", "'FILTER'", "'*'", "'.'", "'SAME'",
"'DISTINCT'", "'('", "')'", "'@'", "", "", "'0'",
}
staticData.SymbolicNames = []string{
"", "NOT_OP", "AND_OP", "OR_OP", "SIMPLE_OP", "UNIQUE", "REP", "IN",
"AS", "CBF", "SELECT", "FROM", "FILTER", "WILDCARD", "CLAUSE_SAME",
"", "NOT_OP", "AND_OP", "OR_OP", "SIMPLE_OP", "UNIQUE", "REP", "EC",
"IN", "AS", "CBF", "SELECT", "FROM", "FILTER", "WILDCARD", "DOT", "CLAUSE_SAME",
"CLAUSE_DISTINCT", "L_PAREN", "R_PAREN", "AT", "IDENT", "NUMBER1", "ZERO",
"STRING", "WS",
}
staticData.RuleNames = []string{
"NOT_OP", "AND_OP", "OR_OP", "SIMPLE_OP", "UNIQUE", "REP", "IN", "AS",
"CBF", "SELECT", "FROM", "FILTER", "WILDCARD", "CLAUSE_SAME", "CLAUSE_DISTINCT",
"L_PAREN", "R_PAREN", "AT", "IDENT", "Digit", "Nondigit", "NUMBER1",
"ZERO", "STRING", "ESC", "UNICODE", "HEX", "SAFECODEPOINTSINGLE", "SAFECODEPOINTDOUBLE",
"WS",
"NOT_OP", "AND_OP", "OR_OP", "SIMPLE_OP", "UNIQUE", "REP", "EC", "IN",
"AS", "CBF", "SELECT", "FROM", "FILTER", "WILDCARD", "DOT", "CLAUSE_SAME",
"CLAUSE_DISTINCT", "L_PAREN", "R_PAREN", "AT", "IDENT", "Digit", "Nondigit",
"NUMBER1", "ZERO", "STRING", "ESC", "UNICODE", "HEX", "SAFECODEPOINTSINGLE",
"SAFECODEPOINTDOUBLE", "WS",
}
staticData.PredictionContextCache = antlr.NewPredictionContextCache()
staticData.serializedATN = []int32{
4, 0, 23, 213, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2,
4, 0, 25, 222, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2,
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1, 0, 0, 0, 7, 88, 1, 0, 0, 0, 9, 90, 1, 0, 0, 0, 11, 97, 1, 0, 0, 0, 13,
101, 1, 0, 0, 0, 15, 104, 1, 0, 0, 0, 17, 107, 1, 0, 0, 0, 19, 110, 1,
0, 0, 0, 21, 114, 1, 0, 0, 0, 23, 121, 1, 0, 0, 0, 25, 126, 1, 0, 0, 0,
27, 133, 1, 0, 0, 0, 29, 135, 1, 0, 0, 0, 31, 137, 1, 0, 0, 0, 33, 142,
1, 0, 0, 0, 35, 151, 1, 0, 0, 0, 37, 153, 1, 0, 0, 0, 39, 155, 1, 0, 0,
0, 41, 157, 1, 0, 0, 0, 43, 165, 1, 0, 0, 0, 45, 167, 1, 0, 0, 0, 47, 169,
1, 0, 0, 0, 49, 176, 1, 0, 0, 0, 51, 196, 1, 0, 0, 0, 53, 198, 1, 0, 0,
0, 55, 203, 1, 0, 0, 0, 57, 209, 1, 0, 0, 0, 59, 211, 1, 0, 0, 0, 61, 213,
1, 0, 0, 0, 63, 216, 1, 0, 0, 0, 65, 66, 5, 78, 0, 0, 66, 67, 5, 79, 0,
0, 67, 68, 5, 84, 0, 0, 68, 2, 1, 0, 0, 0, 69, 70, 5, 65, 0, 0, 70, 71,
5, 78, 0, 0, 71, 72, 5, 68, 0, 0, 72, 4, 1, 0, 0, 0, 73, 74, 5, 79, 0,
0, 74, 75, 5, 82, 0, 0, 75, 6, 1, 0, 0, 0, 76, 77, 5, 69, 0, 0, 77, 89,
5, 81, 0, 0, 78, 79, 5, 78, 0, 0, 79, 89, 5, 69, 0, 0, 80, 81, 5, 71, 0,
0, 81, 89, 5, 69, 0, 0, 82, 83, 5, 71, 0, 0, 83, 89, 5, 84, 0, 0, 84, 85,
5, 76, 0, 0, 85, 89, 5, 84, 0, 0, 86, 87, 5, 76, 0, 0, 87, 89, 5, 69, 0,
0, 88, 76, 1, 0, 0, 0, 88, 78, 1, 0, 0, 0, 88, 80, 1, 0, 0, 0, 88, 82,
1, 0, 0, 0, 88, 84, 1, 0, 0, 0, 88, 86, 1, 0, 0, 0, 89, 8, 1, 0, 0, 0,
90, 91, 5, 85, 0, 0, 91, 92, 5, 78, 0, 0, 92, 93, 5, 73, 0, 0, 93, 94,
5, 81, 0, 0, 94, 95, 5, 85, 0, 0, 95, 96, 5, 69, 0, 0, 96, 10, 1, 0, 0,
0, 97, 98, 5, 82, 0, 0, 98, 99, 5, 69, 0, 0, 99, 100, 5, 80, 0, 0, 100,
12, 1, 0, 0, 0, 101, 102, 5, 69, 0, 0, 102, 103, 5, 67, 0, 0, 103, 14,
1, 0, 0, 0, 104, 105, 5, 73, 0, 0, 105, 106, 5, 78, 0, 0, 106, 16, 1, 0,
0, 0, 107, 108, 5, 65, 0, 0, 108, 109, 5, 83, 0, 0, 109, 18, 1, 0, 0, 0,
110, 111, 5, 67, 0, 0, 111, 112, 5, 66, 0, 0, 112, 113, 5, 70, 0, 0, 113,
20, 1, 0, 0, 0, 114, 115, 5, 83, 0, 0, 115, 116, 5, 69, 0, 0, 116, 117,
5, 76, 0, 0, 117, 118, 5, 69, 0, 0, 118, 119, 5, 67, 0, 0, 119, 120, 5,
84, 0, 0, 120, 22, 1, 0, 0, 0, 121, 122, 5, 70, 0, 0, 122, 123, 5, 82,
0, 0, 123, 124, 5, 79, 0, 0, 124, 125, 5, 77, 0, 0, 125, 24, 1, 0, 0, 0,
126, 127, 5, 70, 0, 0, 127, 128, 5, 73, 0, 0, 128, 129, 5, 76, 0, 0, 129,
130, 5, 84, 0, 0, 130, 131, 5, 69, 0, 0, 131, 132, 5, 82, 0, 0, 132, 26,
1, 0, 0, 0, 133, 134, 5, 42, 0, 0, 134, 28, 1, 0, 0, 0, 135, 136, 5, 46,
0, 0, 136, 30, 1, 0, 0, 0, 137, 138, 5, 83, 0, 0, 138, 139, 5, 65, 0, 0,
139, 140, 5, 77, 0, 0, 140, 141, 5, 69, 0, 0, 141, 32, 1, 0, 0, 0, 142,
143, 5, 68, 0, 0, 143, 144, 5, 73, 0, 0, 144, 145, 5, 83, 0, 0, 145, 146,
5, 84, 0, 0, 146, 147, 5, 73, 0, 0, 147, 148, 5, 78, 0, 0, 148, 149, 5,
67, 0, 0, 149, 150, 5, 84, 0, 0, 150, 34, 1, 0, 0, 0, 151, 152, 5, 40,
0, 0, 152, 36, 1, 0, 0, 0, 153, 154, 5, 41, 0, 0, 154, 38, 1, 0, 0, 0,
155, 156, 5, 64, 0, 0, 156, 40, 1, 0, 0, 0, 157, 162, 3, 45, 22, 0, 158,
161, 3, 43, 21, 0, 159, 161, 3, 45, 22, 0, 160, 158, 1, 0, 0, 0, 160, 159,
1, 0, 0, 0, 161, 164, 1, 0, 0, 0, 162, 160, 1, 0, 0, 0, 162, 163, 1, 0,
0, 0, 163, 42, 1, 0, 0, 0, 164, 162, 1, 0, 0, 0, 165, 166, 7, 0, 0, 0,
166, 44, 1, 0, 0, 0, 167, 168, 7, 1, 0, 0, 168, 46, 1, 0, 0, 0, 169, 173,
7, 2, 0, 0, 170, 172, 3, 43, 21, 0, 171, 170, 1, 0, 0, 0, 172, 175, 1,
0, 0, 0, 173, 171, 1, 0, 0, 0, 173, 174, 1, 0, 0, 0, 174, 48, 1, 0, 0,
0, 175, 173, 1, 0, 0, 0, 176, 177, 5, 48, 0, 0, 177, 50, 1, 0, 0, 0, 178,
183, 5, 34, 0, 0, 179, 182, 3, 53, 26, 0, 180, 182, 3, 61, 30, 0, 181,
179, 1, 0, 0, 0, 181, 180, 1, 0, 0, 0, 182, 185, 1, 0, 0, 0, 183, 181,
1, 0, 0, 0, 183, 184, 1, 0, 0, 0, 184, 186, 1, 0, 0, 0, 185, 183, 1, 0,
0, 0, 186, 197, 5, 34, 0, 0, 187, 192, 5, 39, 0, 0, 188, 191, 3, 53, 26,
0, 189, 191, 3, 59, 29, 0, 190, 188, 1, 0, 0, 0, 190, 189, 1, 0, 0, 0,
191, 194, 1, 0, 0, 0, 192, 190, 1, 0, 0, 0, 192, 193, 1, 0, 0, 0, 193,
195, 1, 0, 0, 0, 194, 192, 1, 0, 0, 0, 195, 197, 5, 39, 0, 0, 196, 178,
1, 0, 0, 0, 196, 187, 1, 0, 0, 0, 197, 52, 1, 0, 0, 0, 198, 201, 5, 92,
0, 0, 199, 202, 7, 3, 0, 0, 200, 202, 3, 55, 27, 0, 201, 199, 1, 0, 0,
0, 201, 200, 1, 0, 0, 0, 202, 54, 1, 0, 0, 0, 203, 204, 5, 117, 0, 0, 204,
205, 3, 57, 28, 0, 205, 206, 3, 57, 28, 0, 206, 207, 3, 57, 28, 0, 207,
208, 3, 57, 28, 0, 208, 56, 1, 0, 0, 0, 209, 210, 7, 4, 0, 0, 210, 58,
1, 0, 0, 0, 211, 212, 8, 5, 0, 0, 212, 60, 1, 0, 0, 0, 213, 214, 8, 6,
0, 0, 214, 62, 1, 0, 0, 0, 215, 217, 7, 7, 0, 0, 216, 215, 1, 0, 0, 0,
217, 218, 1, 0, 0, 0, 218, 216, 1, 0, 0, 0, 218, 219, 1, 0, 0, 0, 219,
220, 1, 0, 0, 0, 220, 221, 6, 31, 0, 0, 221, 64, 1, 0, 0, 0, 12, 0, 88,
160, 162, 173, 181, 183, 190, 192, 196, 201, 218, 1, 6, 0, 0,
}
deserializer := antlr.NewATNDeserializer(nil)
staticData.atn = deserializer.Deserialize(staticData.serializedATN)
@ -202,21 +206,23 @@ const (
QueryLexerSIMPLE_OP = 4
QueryLexerUNIQUE = 5
QueryLexerREP = 6
QueryLexerIN = 7
QueryLexerAS = 8
QueryLexerCBF = 9
QueryLexerSELECT = 10
QueryLexerFROM = 11
QueryLexerFILTER = 12
QueryLexerWILDCARD = 13
QueryLexerCLAUSE_SAME = 14
QueryLexerCLAUSE_DISTINCT = 15
QueryLexerL_PAREN = 16
QueryLexerR_PAREN = 17
QueryLexerAT = 18
QueryLexerIDENT = 19
QueryLexerNUMBER1 = 20
QueryLexerZERO = 21
QueryLexerSTRING = 22
QueryLexerWS = 23
QueryLexerEC = 7
QueryLexerIN = 8
QueryLexerAS = 9
QueryLexerCBF = 10
QueryLexerSELECT = 11
QueryLexerFROM = 12
QueryLexerFILTER = 13
QueryLexerWILDCARD = 14
QueryLexerDOT = 15
QueryLexerCLAUSE_SAME = 16
QueryLexerCLAUSE_DISTINCT = 17
QueryLexerL_PAREN = 18
QueryLexerR_PAREN = 19
QueryLexerAT = 20
QueryLexerIDENT = 21
QueryLexerNUMBER1 = 22
QueryLexerZERO = 23
QueryLexerSTRING = 24
QueryLexerWS = 25
)

711
netmap/parser/query_parser.go
View file

File diff suppressed because it is too large Load diff

5
netmap/parser/query_visitor.go
View file

@ -1,4 +1,4 @@
// Code generated from Query.g4 by ANTLR 4.13.0. DO NOT EDIT.
// Code generated from /repo/frostfs/sdk-go/netmap/parser/Query.g4 by ANTLR 4.13.0. DO NOT EDIT.
package parser // Query
@ -14,6 +14,9 @@ type QueryVisitor interface {
// Visit a parse tree produced by Query#selectFilterExpr.
VisitSelectFilterExpr(ctx *SelectFilterExprContext) interface{}
// Visit a parse tree produced by Query#ecStmt.
VisitEcStmt(ctx *EcStmtContext) interface{}
// Visit a parse tree produced by Query#repStmt.
VisitRepStmt(ctx *RepStmtContext) interface{}

72
netmap/policy.go
View file

@ -34,8 +34,17 @@ type PlacementPolicy struct {
func (p *PlacementPolicy) readFromV2(m netmap.PlacementPolicy, checkFieldPresence bool) error {
p.replicas = m.GetReplicas()
if checkFieldPresence && len(p.replicas) == 0 {
return errors.New("missing replicas")
if checkFieldPresence {
if len(p.replicas) == 0 {
return errors.New("missing replicas")
}
if len(p.replicas) != 1 {
for i := range p.replicas {
if p.replicas[i].GetECDataCount() != 0 || p.replicas[i].GetECParityCount() != 0 {
return errors.New("erasure code group must be used exclusively")
}
}
}
}
p.backupFactor = m.GetContainerBackupFactor()
@ -393,10 +402,14 @@ func (p PlacementPolicy) WriteStringTo(w io.StringWriter) (err error) {
c := p.replicas[i].GetCount()
s := p.replicas[i].GetSelector()
if s != "" {
_, err = w.WriteString(fmt.Sprintf("%sREP %d IN %s", delim, c, s))
} else {
if c != 0 {
_, err = w.WriteString(fmt.Sprintf("%sREP %d", delim, c))
} else {
ecx, ecy := p.replicas[i].GetECDataCount(), p.replicas[i].GetECParityCount()
_, err = w.WriteString(fmt.Sprintf("%sEC %d.%d", delim, ecx, ecy))
}
if s != "" {
_, err = w.WriteString(fmt.Sprintf(" IN %s", s))
}
if err != nil {
@ -630,6 +643,8 @@ var (
"make sure to pair REP and SELECT clauses: \"REP .. IN X\" + \"SELECT ... AS X\"")
// errRedundantSelector is returned for errors found by filters policy validator.
errRedundantFilter = errors.New("policy: found redundant filter")
// errECFewSelectors is returned when EC keyword is used without UNIQUE keyword.
errECFewSelectors = errors.New("policy: too few nodes to select")
)
type policyVisitor struct {
@ -657,11 +672,18 @@ func (p *policyVisitor) VisitPolicy(ctx *parser.PolicyContext) any {
pl.unique = ctx.UNIQUE() != nil
repStmts := ctx.AllRepStmt()
pl.replicas = make([]netmap.Replica, 0, len(repStmts))
for _, r := range repStmts {
res, ok := r.Accept(p).(*netmap.Replica)
stmts := ctx.GetChildren()
for _, r := range stmts {
var res *netmap.Replica
var ok bool
switch r := r.(type) {
case parser.IRepStmtContext:
res, ok = r.Accept(p).(*netmap.Replica)
case parser.IEcStmtContext:
res, ok = r.Accept(p).(*netmap.Replica)
default:
continue
dstepanov-yadro commented 2024-03-06 12:38:16 +00:00
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This means current statement will be skipped. Why?

This means current statement will be skipped. Why?
fyrchik commented 2024-03-06 12:45:51 +00:00
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We are interested only in EC and REP statements here and in their order.
Previously it was AllRepStmt, now we get all children and filter all non-REP and non-EC statements, they will be processed below.

We are interested only in EC and REP statements here and in their _order_. Previously it was `AllRepStmt`, now we get all children and filter all non-REP and non-EC statements, they will be processed below.
}
if !ok {
return nil
}
@ -758,6 +780,28 @@ func (p *policyVisitor) VisitRepStmt(ctx *parser.RepStmtContext) any {
return rs
}
// VisitRepStmt implements parser.QueryVisitor interface.
func (p *policyVisitor) VisitEcStmt(ctx *parser.EcStmtContext) any {
dataCount, err := strconv.ParseUint(ctx.GetData().GetText(), 10, 32)
if err != nil {
return p.reportError(errInvalidNumber)
}
parityCount, err := strconv.ParseUint(ctx.GetParity().GetText(), 10, 32)
if err != nil {
return p.reportError(errInvalidNumber)
}
rs := new(netmap.Replica)
rs.SetECDataCount(uint32(dataCount))
rs.SetECParityCount(uint32(parityCount))
if sel := ctx.GetSelector(); sel != nil {
rs.SetSelector(sel.GetText())
}
return rs
}
// VisitSelectStmt implements parser.QueryVisitor interface.
func (p *policyVisitor) VisitSelectStmt(ctx *parser.SelectStmtContext) any {
res, err := strconv.ParseUint(ctx.GetCount().GetText(), 10, 32)
@ -910,6 +954,14 @@ func validatePolicy(p PlacementPolicy) error {
if seenSelectors[selName] == nil {
return fmt.Errorf("%w: '%s'", errUnknownSelector, selName)
}
dataCount := p.replicas[i].GetECDataCount()
parityCount := p.replicas[i].GetECParityCount()
if dataCount != 0 || parityCount != 0 {
if c := seenSelectors[selName].GetCount(); c < dataCount+parityCount {
dstepanov-yadro marked this conversation as resolved Outdated
dstepanov-yadro commented 2024-03-06 13:50:27 +00:00
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Also we can check that X+Y <= Z for EC X.Y SELECT Z FROM ... policy.

Also we can check that `X+Y <= Z` for `EC X.Y SELECT Z FROM ... ` policy.
fyrchik commented 2024-03-12 13:51:07 +00:00
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Fixed.

Fixed.
return fmt.Errorf("%w: %d < %d + %d", errECFewSelectors, c, dataCount, parityCount)
}
}
}
}

2
netmap/policy_decode_test.go
View file

@ -44,6 +44,8 @@ FILTER Node EQ '10.78.8.11' AS F`,
`UNIQUE
REP 1
REP 1`,
`EC 1.2 IN X
SELECT 3 IN City FROM * AS X`,
}
var p PlacementPolicy