From 6eeebb0b2ceb42114f45b1219c449cf6df143d31 Mon Sep 17 00:00:00 2001
From: dapan1121 <89396746@qq.com>
Date: Fri, 19 Mar 2021 14:24:39 +0800
Subject: [PATCH] fix fid error when ts < 0

---
 src/tsdb/src/tsdbRead.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index 3426fe86c2..648b6d3617 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -842,6 +842,10 @@ static int32_t getFileIdFromKey(TSKEY key, int32_t daysPerFile, int32_t precisio
     return INT32_MIN;
   }
 
+  if (key < 0) {
+    key -= (daysPerFile * tsMsPerDay[precision]);
+  }
+  
   int64_t fid = (int64_t)(key / (daysPerFile * tsMsPerDay[precision]));  // set the starting fileId
   if (fid < 0L && llabs(fid) > INT32_MAX) { // data value overflow for INT32
     fid = INT32_MIN;
-- 
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