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add log message if new tablet doesn't have a sufficiently new timesta… #3084

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merged 2 commits into from
Aug 17, 2017
Merged

add log message if new tablet doesn't have a sufficiently new timesta… #3084

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b5339b7
add log message if new tablet doesn't have a sufficiently new timesta…
gentryx Aug 17, 2017
3f9f5f7
fix typo, add missing includes for log message
gentryx Aug 17, 2017
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12 changes: 9 additions & 3 deletions go/vt/discovery/tablet_stats_cache.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,10 @@ package discovery
import (
"sync"

log "github.com/golang/glog"
querypb "github.com/youtube/vitess/go/vt/proto/query"
topodatapb "github.com/youtube/vitess/go/vt/proto/topodata"
"github.com/youtube/vitess/go/vt/topo/topoproto"
)

// TabletStatsCache is a HealthCheckStatsListener that keeps both the
Expand Down Expand Up @@ -193,9 +195,13 @@ func (tc *TabletStatsCache) StatsUpdate(ts *TabletStats) {

// We already have one up server, see if we
// need to replace it.
if e.healthy[0].TabletExternallyReparentedTimestamp > ts.TabletExternallyReparentedTimestamp {
// The notification we just got is older than
// the one we had before, discard it.
if ts.TabletExternallyReparentedTimestamp < e.healthy[0].TabletExternallyReparentedTimestamp {
log.Warningf("not marking healthy master as Up because its externally reparented timestamp is smaller than the highest known timestamp from previous MASTERs: %d < %d ",
ts.TabletExternallyReparentedTimestamp,
e.healthy[0].TabletExternallyReparentedTimestamp,
topoproto.KeyspaceShardString(ts.Target.Keyspace, ts.Target.Shard),
topoproto.TabletAliasString(ts.Tablet.Alias),
topoproto.TabletAliasString(e.healthy[0].Tablet.Alias))
return
}

Expand Down