X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/95d0775bf6fa098871961fadb30aa4b052c6aa61..20d7f7ebaaf9e1841d48a5048df8a7193b7c9a8e:/sdk/python/arvados/commands/federation_migrate.py

diff --git a/sdk/python/arvados/commands/federation_migrate.py b/sdk/python/arvados/commands/federation_migrate.py
index 32b3211f14..770e1609db 100755
--- a/sdk/python/arvados/commands/federation_migrate.py
+++ b/sdk/python/arvados/commands/federation_migrate.py
@@ -97,13 +97,12 @@ def fetch_users(clusters, loginCluster):
     by_email = {}
     by_username = {}
 
-    users = []
-    for c, arv in clusters.items():
-        print("Getting user list from %s" % c)
-        ul = arvados.util.list_all(arv.users().list, bypass_federation=True)
-        for l in ul:
-            if l["uuid"].startswith(c):
-                users.append(l)
+    users = [
+        user
+        for prefix, arv in clusters.items()
+        for user in arvados.util.keyset_list_all(arv.users().list, bypass_federation=True)
+        if user['uuid'].startswith(prefix)
+    ]
 
     # Users list is sorted by email
     # Go through users and collect users with same email
@@ -111,7 +110,7 @@ def fetch_users(clusters, loginCluster):
     # call add_accum_rows() to generate the report rows with
     # the "home cluster" set, and also fill in the by_email table.
 
-    users = sorted(users, key=lambda u: u["email"]+"::"+(u["username"] or "")+"::"+u["uuid"])
+    users.sort(key=lambda u: (u["email"], u["username"] or "", u["uuid"]))
 
     accum = []
     lastemail = None