From c2960c7a861d5e827143731274cf04e4e5c8f584 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Wed, 26 Jun 2019 11:18:23 -0700
Subject: [PATCH] defaulting file ttl to volume ttl

fix https://github.com/chrislusf/seaweedfs/issues/992
---
 weed/storage/needle/volume_ttl.go | 3 +++
 weed/storage/volume_read_write.go | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/weed/storage/needle/volume_ttl.go b/weed/storage/needle/volume_ttl.go
index 0b4c9579b..4a169870d 100644
--- a/weed/storage/needle/volume_ttl.go
+++ b/weed/storage/needle/volume_ttl.go
@@ -48,6 +48,9 @@ func ReadTTL(ttlString string) (*TTL, error) {
 
 // read stored bytes to a ttl
 func LoadTTLFromBytes(input []byte) (t *TTL) {
+	if input[0] == 0 && input[1] == 0 {
+		return EMPTY_TTL
+	}
 	return &TTL{Count: input[0], Unit: input[1]}
 }
 
diff --git a/weed/storage/volume_read_write.go b/weed/storage/volume_read_write.go
index bd268c1a6..93ce1eab9 100644
--- a/weed/storage/volume_read_write.go
+++ b/weed/storage/volume_read_write.go
@@ -91,6 +91,11 @@ func (v *Volume) writeNeedle(n *needle.Needle) (offset uint64, size uint32, isUn
 		return
 	}
 
+	if n.Ttl == needle.EMPTY_TTL && v.Ttl != needle.EMPTY_TTL {
+		n.SetHasTtl()
+		n.Ttl = v.Ttl
+	}
+
 	n.AppendAtNs = uint64(time.Now().UnixNano())
 	if offset, size, _, err = n.Append(v.dataFile, v.Version()); err != nil {
 		return