graph: Reduce default fdw_fetch_size to 1000

10,000 seems too big and actually slows things down

Author: lutter

graph/src/env/store.rs

@@ -280,7 +280,7 @@ pub struct InnerStore {
     last_rollup_from_poi: bool,
     #[envconfig(from = "GRAPH_STORE_INSERT_EXTRA_COLS", default = "0")]
     insert_extra_cols: usize,
-    #[envconfig(from = "GRAPH_STORE_FDW_FETCH_SIZE", default = "10000")]
+    #[envconfig(from = "GRAPH_STORE_FDW_FETCH_SIZE", default = "1000")]
     fdw_fetch_size: usize,
 }