Revert "Refresh indexes on read or at maintenance"

This reverts commit bfa8fab553eab1b0daa062010fb2ccf5d365d21f.

1 files changed, 14 insertions, 5 deletions

diff --git a/log_db/src/memtable_primary.rs b/log_db/src/memtable_primary.rs
index 8340cdd..9d7e1e8 100644
--- a/log_db/src/memtable_primary.rs
+++ b/log_db/src/memtable_primary.rs
@@ -2,9 +2,14 @@ use super::common::*;
 use std::collections::BTreeMap;
 
 pub struct PrimaryMemtable {
-    /// Map of record locations indexed by key. Use the `LogKey` values to look up
-    /// the actual records in the log files.
-    records: BTreeMap<IndexableValue, LogKey>,
+    /// Map of records indexed by key. Used as a shared heap of records
+    /// for all secondary memtables also. Secondary memtables store an
+    /// IndexableValue as their record value, which is used to get
+    /// the actual record from the primary memtable `records` map.
+    ///
+    /// Note: it must be invariant that all memtables (primary and secondary)
+    /// contain the same keys.
+    records: BTreeMap<IndexableValue, Record>,
 }
 
 impl PrimaryMemtable {
@@ -14,11 +19,15 @@ impl PrimaryMemtable {
         }
     }
 
-    pub fn set(&mut self, key: &IndexableValue, value: &LogKey) {
+    pub fn set(&mut self, key: &IndexableValue, value: &Record) {
         self.records.insert(key.clone(), value.clone());
     }
 
-    pub fn get(&self, key: &IndexableValue) -> Option<&LogKey> {
+    pub fn get(&mut self, key: &IndexableValue) -> Option<&Record> {
+        self.records.get(key)
+    }
+
+    pub fn get_without_update(&self, key: &IndexableValue) -> Option<&Record> {
         self.records.get(key)
     }
 }