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app/vmselect/netstorage: improve error message when reading data blocks from storage

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Mention the block number in the error. This should simplify troubleshooting in this code.
This commit is contained in:
Aliaksandr Valialkin 2019-07-28 12:12:30 +03:00
parent b7089705b7
commit 5b8526e925
1 changed files with 4 additions and 2 deletions
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6
app/vmselect/netstorage/netstorage.go
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@ -724,6 +724,7 @@ func ProcessSearchQuery(at *auth.Token, sq *storage.SearchQuery, deadline Deadli
var errors []error
tbf := getTmpBlocksFile()
m := make(map[string][]tmpBlockAddr)
blocksRead := 0
for i := 0; i < len(storageNodes); i++ {
// There is no need in timer here, since all the goroutines executing
// sn.processSearchQuery must be finished until the deadline.
@ -733,9 +734,10 @@ func ProcessSearchQuery(at *auth.Token, sq *storage.SearchQuery, deadline Deadli
continue
}
for _, mb := range nr.results {
blocksRead++
addr, err := tbf.WriteBlock(mb.Block)
if err != nil {
errors = append(errors, fmt.Errorf("cannot write data to temporary blocks file: %s", err))
errors = append(errors, fmt.Errorf("cannot write data block #%d to temporary blocks file: %s", blocksRead, err))
break
}
metricName := mb.MetricName
@ -760,7 +762,7 @@ func ProcessSearchQuery(at *auth.Token, sq *storage.SearchQuery, deadline Deadli
}
if err := tbf.Finalize(); err != nil {
putTmpBlocksFile(tbf)
return nil, false, fmt.Errorf("cannot finalize temporary blocks file: %s", err)
return nil, false, fmt.Errorf("cannot finalize temporary blocks file with %d blocks: %s", blocksRead, err)
}
var rss Results