tsdb/wal: Avoid writing closed channel. (#9566)

Signed-off-by: johncming <johncming@yahoo.com>
2021-11-06 17:41:06 +08:00 · 2021-11-06 17:41:06 +08:00 · b882d2b7c7
parent d18e42c650
commit b882d2b7c7
1 changed files with 4 additions and 0 deletions
--- a/tsdb/wal/wal.go
+++ b/tsdb/wal/wal.go
@ -472,6 +472,10 @@ func (w *WAL) NextSegment() error {

 // nextSegment creates the next segment and closes the previous one.
 func (w *WAL) nextSegment() error {
+	if w.closed {
+		return errors.New("wal is closed")
+	}
+
 	// Only flush the current page if it actually holds data.
 	if w.page.alloc > 0 {
 		if err := w.flushPage(true); err != nil {