set infinite timeout on v expensive queries

backend/lib/backend/scheduler.ex

@@ -25,7 +25,7 @@ defmodule Backend.Scheduler do
         i.inserted_at <
           datetime_add(^NaiveDateTime.utc_now(), -1 * ^amount, ^unit)
       )
-      |> Repo.delete_all()
+      |> Repo.delete_all(timeout: :infinity)
 
     Logger.info("Pruned #{deleted_num} old crawls.")
   end
@@ -59,7 +59,7 @@ defmodule Backend.Scheduler do
         # we can take min() because every row is the same
         interactions: min(c.interactions_seen)
       })
-      |> Repo.all()
+      |> Repo.all(timeout: :infinity)
       |> Enum.map(fn %{domain: domain, mentions: mentions, interactions: interactions} ->
         %{
           domain: domain,
@@ -72,7 +72,8 @@ defmodule Backend.Scheduler do
     Instance
     |> Repo.insert_all(scores,
       on_conflict: {:replace, [:insularity, :updated_at]},
-      conflict_target: :domain
+      conflict_target: :domain,
+      timeout: :infinity
     )
   end
 
@@ -107,7 +108,7 @@ defmodule Backend.Scheduler do
         second_earliest_crawl: min(c.inserted_at)
       })
       |> group_by([c], c.instance_domain)
-      |> Repo.all()
+      |> Repo.all(timeout: :infinity)
       |> Enum.map(fn %{
                        instance_domain: domain,
                        status_count: status_count,
@@ -128,7 +129,8 @@ defmodule Backend.Scheduler do
     Instance
     |> Repo.insert_all(instances,
       on_conflict: {:replace, [:statuses_per_day, :updated_at]},
-      conflict_target: :domain
+      conflict_target: :domain,
+      timeout: :infinity
     )
   end
 
@@ -167,12 +169,13 @@ defmodule Backend.Scheduler do
         source_statuses_seen: min(c_source.statuses_seen),
         target_statuses_seen: min(c_target.statuses_seen)
       })
-      |> Repo.all()
+      |> Repo.all(timeout: :infinity)
 
     # Get edges and their weights
-    Repo.transaction(fn ->
+    Repo.transaction(
+      fn ->
         Edge
-      |> Repo.delete_all()
+        |> Repo.delete_all(timeout: :infinity)
 
         edges =
           interactions
@@ -197,7 +200,8 @@ defmodule Backend.Scheduler do
 
               statuses_seen = source_statuses_seen + target_statuses_seen
 
-            Map.update(acc, key, {mentions, statuses_seen}, fn {curr_mentions, curr_statuses_seen} ->
+              Map.update(acc, key, {mentions, statuses_seen}, fn {curr_mentions,
+                                                                  curr_statuses_seen} ->
                 {curr_mentions + mentions, curr_statuses_seen}
               end)
           end)
@@ -212,8 +216,10 @@ defmodule Backend.Scheduler do
           end)
 
         Edge
-      |> Repo.insert_all(edges)
-    end)
+        |> Repo.insert_all(edges, timeout: :infinity)
+      end,
+      timeout: :infinity
+    )
   end
 
   @doc """