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Fix panic:runtime error: invalid memory address or nil pointer dereference 

github.com/influxdata/influxdb/tsdb.(*Shard).FieldDimensions(0xc820244000, 0xc821b70fb0, 0x1, 0x1, 0xc822b9cc00, 0xc822b9cc30, 0x0, 0x0)
    /Users/jason/go/src/github.com/influxdata/influxdb/tsdb/shard.go:588 +0xa62
github.com/influxdata/influxdb/tsdb.(*shardIteratorCreator).FieldDimensions(0xc8202b6078, 0xc821b70fb0, 0x1, 0x1, 0xc822b9cbd0, 0x0, 0x0, 0x0)
    /Users/jason/go/src/github.com/influxdata/influxdb/tsdb/shard.go:818 +0x53
github.com/influxdata/influxdb/influxql.IteratorCreators.FieldDimensions(0xc821b71250, 0x1, 0x1, 0xc821b70fb0, 0x1, 0x1, 0xc822b9cba0, 0xc822b9cbd0, 0x0, 0x0)
    /Users/jason/go/src/github.com/influxdata/influxdb/influxql/iterator.go:639 +0x15a
github.com/influxdata/influxdb/influxql.(*IteratorCreators).FieldDimensions(0xc822a32ae0, 0xc821b70fb0, 0x1, 0x1, 0x20, 0x18, 0x0, 0x0)
    <autogenerated>:163 +0xd3
pull/7027/head
Jason Wilder 2016-07-18 16:35:33 -06:00
parent 30efa2d922
commit 757f31bd45
1 changed files with 4 additions and 0 deletions
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4
tsdb/shard.go
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@ -542,6 +542,10 @@ func (s *Shard) createSystemIterator(opt influxql.IteratorOptions) (influxql.Ite
// FieldDimensions returns unique sets of fields and dimensions across a list of sources.
func (s *Shard) FieldDimensions(sources influxql.Sources) (fields map[string]influxql.DataType, dimensions map[string]struct{}, err error) {
if err := s.ready(); err != nil {
return nil, nil, err
}
if influxql.Sources(sources).HasSystemSource() {
// Only support a single system source.
if len(sources) > 1 {