From 2c13f210bc7ecba1554316683944fbf52bc6026e Mon Sep 17 00:00:00 2001
From: Paul Masurel <paul.masurel@gmail.com>
Date: Sun, 7 May 2017 15:57:29 +0900
Subject: [PATCH] Bugfix on merging i64 fast fields

---
 src/core/segment_reader.rs | 7 +++++++
 src/indexer/merger.rs      | 4 ++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/core/segment_reader.rs b/src/core/segment_reader.rs
index e8a3913af..7b4387904 100644
--- a/src/core/segment_reader.rs
+++ b/src/core/segment_reader.rs
@@ -25,6 +25,8 @@ use schema::FieldType;
 use postings::FreqHandler;
 use schema::TextIndexingOptions;
 
+
+
 /// Entry point to access all of the datastructures of the `Segment`
 ///
 /// - term dictionary
@@ -74,6 +76,11 @@ impl SegmentReader {
         self.delete_bitset.len() as DocId
     }
 
+    #[doc(hidden)]
+    pub fn fast_fields_reader(&self) -> &FastFieldsReader {
+        &*self.fast_fields_reader
+    }
+
     /// Accessor to a segment's fast field reader given a field.
     ///
     /// Returns the u64 fast value reader if the field
diff --git a/src/indexer/merger.rs b/src/indexer/merger.rs
index 56d30e963..e638067c2 100644
--- a/src/indexer/merger.rs
+++ b/src/indexer/merger.rs
@@ -77,8 +77,8 @@ fn extract_fieldnorm_reader(segment_reader: &SegmentReader, field: Field) -> Opt
 
 fn extract_fast_field_reader(segment_reader: &SegmentReader, field: Field) -> Option<U64FastFieldReader> {
     segment_reader
-        .get_fast_field_reader(field)
-        .ok()
+        .fast_fields_reader()
+        .open_reader(field)
 }
 
 impl IndexMerger {