prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Bug in the filter_thread_work algorithm for Postgres backend
  Motivation
  ----------
  The partitioning algorithm sometimes fails with `Details: (psycopg2.errors.NumericValueOutOfRange) integer out of range` for Postgres backend, e.g. : 
  ```
  rucio=> select abs(('x'||md5(requests.id::text))::bit(64)::int) from requests limit 1;
  ERROR:  integer out of range
  rucio=> select abs(('x'||md5(requests.id::text))::bit(64)::bigint) from requests limit 1;
           abs         
  ---------------------
   9096650785057471382
  (1 row)
  ```
  
  
  
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `lib/rucio/db/sqla/__init__.py`
  Content:
  ```
  1 # Copyright European Organization for Nuclear Research (CERN)
  2 #
  3 # Licensed under the Apache License, Version 2.0 (the "License");
  4 # You may not use this file except in compliance with the License.
  5 # You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
  6 
  7 from sqlalchemy.sql.expression import bindparam, text
  8 
  9 
  10 def filter_thread_work(session, query, total_threads, thread_id, hash_variable=None):
  11     """ Filters a query to partition thread workloads based on the thread id and total number of threads """
  12     if thread_id is not None and total_threads is not None and (total_threads - 1) > 0:
  13         if session.bind.dialect.name == 'oracle':
  14             bindparams = [bindparam('thread_id', thread_id), bindparam('total_threads', total_threads - 1)]
  15             if not hash_variable:
  16                 query = query.filter(text('ORA_HASH(id, :total_threads) = :thread_id').bindparams(*bindparams))
  17             else:
  18                 query = query.filter(text('ORA_HASH(%s, :total_threads) = :thread_id' % (hash_variable)).bindparams(*bindparams))
  19         elif session.bind.dialect.name == 'mysql':
  20             if not hash_variable:
  21                 query = query.filter(text('mod(md5(id), %s) = %s' % (total_threads, thread_id)))
  22             else:
  23                 query = query.filter(text('mod(md5(%s), %s) = %s' % (hash_variable, total_threads, thread_id)))
  24         elif session.bind.dialect.name == 'postgresql':
  25             if not hash_variable:
  26                 query = query.filter(text('mod(abs((\'x\'||md5(id::text))::bit(32)::int), %s) = %s' % (total_threads, thread_id)))
  27             else:
  28                 query = query.filter(text('mod(abs((\'x\'||md5(%s::text))::bit(32)::int), %s) = %s' % (hash_variable, total_threads, thread_id)))
  29     return query
  30
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/lib/rucio/db/sqla/__init__.py b/lib/rucio/db/sqla/__init__.py
  --- a/lib/rucio/db/sqla/__init__.py
  +++ b/lib/rucio/db/sqla/__init__.py
  @@ -1,8 +1,24 @@
  -# Copyright European Organization for Nuclear Research (CERN)
  +# -*- coding: utf-8 -*-
  +# Copyright 2013-2022 CERN
   #
   # Licensed under the Apache License, Version 2.0 (the "License");
  -# You may not use this file except in compliance with the License.
  -# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
  +# you may not use this file except in compliance with the License.
  +# You may obtain a copy of the License at
  +#
  +#    http://www.apache.org/licenses/LICENSE-2.0
  +#
  +# Unless required by applicable law or agreed to in writing, software
  +# distributed under the License is distributed on an "AS IS" BASIS,
  +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  +# See the License for the specific language governing permissions and
  +# limitations under the License.
  +#
  +# Authors:
  +# - Vincent Garonne <vincent.garonne@cern.ch>, 2013-2015
  +# - Brandon White <bjwhite@fnal.gov>, 2019
  +# - Martin Barisits <martin.barisits@cern.ch>, 2020
  +# - Radu Carpa <radu.carpa@cern.ch>, 2021
  +# - Cedric Serfon <cedric.serfon@cern.ch>, 2022
   
   from sqlalchemy.sql.expression import bindparam, text
   
  @@ -23,7 +39,7 @@
                   query = query.filter(text('mod(md5(%s), %s) = %s' % (hash_variable, total_threads, thread_id)))
           elif session.bind.dialect.name == 'postgresql':
               if not hash_variable:
  -                query = query.filter(text('mod(abs((\'x\'||md5(id::text))::bit(32)::int), %s) = %s' % (total_threads, thread_id)))
  +                query = query.filter(text('mod(abs((\'x\'||md5(id::text))::bit(32)::bigint), %s) = %s' % (total_threads, thread_id)))
               else:
  -                query = query.filter(text('mod(abs((\'x\'||md5(%s::text))::bit(32)::int), %s) = %s' % (hash_variable, total_threads, thread_id)))
  +                query = query.filter(text('mod(abs((\'x\'||md5(%s::text))::bit(32)::bigint), %s) = %s' % (hash_variable, total_threads, thread_id)))
       return query
  
verification_info: {"golden_diff": "diff --git a/lib/rucio/db/sqla/__init__.py b/lib/rucio/db/sqla/__init__.py\n--- a/lib/rucio/db/sqla/__init__.py\n+++ b/lib/rucio/db/sqla/__init__.py\n@@ -1,8 +1,24 @@\n-# Copyright European Organization for Nuclear Research (CERN)\n+# -*- coding: utf-8 -*-\n+# Copyright 2013-2022 CERN\n #\n # Licensed under the Apache License, Version 2.0 (the \"License\");\n-# You may not use this file except in compliance with the License.\n-# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0\n+# you may not use this file except in compliance with the License.\n+# You may obtain a copy of the License at\n+#\n+#    http://www.apache.org/licenses/LICENSE-2.0\n+#\n+# Unless required by applicable law or agreed to in writing, software\n+# distributed under the License is distributed on an \"AS IS\" BASIS,\n+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+# See the License for the specific language governing permissions and\n+# limitations under the License.\n+#\n+# Authors:\n+# - Vincent Garonne <vincent.garonne@cern.ch>, 2013-2015\n+# - Brandon White <bjwhite@fnal.gov>, 2019\n+# - Martin Barisits <martin.barisits@cern.ch>, 2020\n+# - Radu Carpa <radu.carpa@cern.ch>, 2021\n+# - Cedric Serfon <cedric.serfon@cern.ch>, 2022\n \n from sqlalchemy.sql.expression import bindparam, text\n \n@@ -23,7 +39,7 @@\n                 query = query.filter(text('mod(md5(%s), %s) = %s' % (hash_variable, total_threads, thread_id)))\n         elif session.bind.dialect.name == 'postgresql':\n             if not hash_variable:\n-                query = query.filter(text('mod(abs((\\'x\\'||md5(id::text))::bit(32)::int), %s) = %s' % (total_threads, thread_id)))\n+                query = query.filter(text('mod(abs((\\'x\\'||md5(id::text))::bit(32)::bigint), %s) = %s' % (total_threads, thread_id)))\n             else:\n-                query = query.filter(text('mod(abs((\\'x\\'||md5(%s::text))::bit(32)::int), %s) = %s' % (hash_variable, total_threads, thread_id)))\n+                query = query.filter(text('mod(abs((\\'x\\'||md5(%s::text))::bit(32)::bigint), %s) = %s' % (hash_variable, total_threads, thread_id)))\n     return query\n", "issue": "Bug in the filter_thread_work algorithm for Postgres backend\nMotivation\r\n----------\r\nThe partitioning algorithm sometimes fails with `Details: (psycopg2.errors.NumericValueOutOfRange) integer out of range` for Postgres backend, e.g. : \r\n```\r\nrucio=> select abs(('x'||md5(requests.id::text))::bit(64)::int) from requests limit 1;\r\nERROR:  integer out of range\r\nrucio=> select abs(('x'||md5(requests.id::text))::bit(64)::bigint) from requests limit 1;\r\n         abs         \r\n---------------------\r\n 9096650785057471382\r\n(1 row)\r\n```\r\n\r\n\r\n\r\n\n", "before_files": [{"content": "# Copyright European Organization for Nuclear Research (CERN)\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# You may not use this file except in compliance with the License.\n# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0\n\nfrom sqlalchemy.sql.expression import bindparam, text\n\n\ndef filter_thread_work(session, query, total_threads, thread_id, hash_variable=None):\n    \"\"\" Filters a query to partition thread workloads based on the thread id and total number of threads \"\"\"\n    if thread_id is not None and total_threads is not None and (total_threads - 1) > 0:\n        if session.bind.dialect.name == 'oracle':\n            bindparams = [bindparam('thread_id', thread_id), bindparam('total_threads', total_threads - 1)]\n            if not hash_variable:\n                query = query.filter(text('ORA_HASH(id, :total_threads) = :thread_id').bindparams(*bindparams))\n            else:\n                query = query.filter(text('ORA_HASH(%s, :total_threads) = :thread_id' % (hash_variable)).bindparams(*bindparams))\n        elif session.bind.dialect.name == 'mysql':\n            if not hash_variable:\n                query = query.filter(text('mod(md5(id), %s) = %s' % (total_threads, thread_id)))\n            else:\n                query = query.filter(text('mod(md5(%s), %s) = %s' % (hash_variable, total_threads, thread_id)))\n        elif session.bind.dialect.name == 'postgresql':\n            if not hash_variable:\n                query = query.filter(text('mod(abs((\\'x\\'||md5(id::text))::bit(32)::int), %s) = %s' % (total_threads, thread_id)))\n            else:\n                query = query.filter(text('mod(abs((\\'x\\'||md5(%s::text))::bit(32)::int), %s) = %s' % (hash_variable, total_threads, thread_id)))\n    return query\n", "path": "lib/rucio/db/sqla/__init__.py"}], "after_files": [{"content": "# -*- coding: utf-8 -*-\n# Copyright 2013-2022 CERN\n#\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n#\n#    http://www.apache.org/licenses/LICENSE-2.0\n#\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n#\n# Authors:\n# - Vincent Garonne <vincent.garonne@cern.ch>, 2013-2015\n# - Brandon White <bjwhite@fnal.gov>, 2019\n# - Martin Barisits <martin.barisits@cern.ch>, 2020\n# - Radu Carpa <radu.carpa@cern.ch>, 2021\n# - Cedric Serfon <cedric.serfon@cern.ch>, 2022\n\nfrom sqlalchemy.sql.expression import bindparam, text\n\n\ndef filter_thread_work(session, query, total_threads, thread_id, hash_variable=None):\n    \"\"\" Filters a query to partition thread workloads based on the thread id and total number of threads \"\"\"\n    if thread_id is not None and total_threads is not None and (total_threads - 1) > 0:\n        if session.bind.dialect.name == 'oracle':\n            bindparams = [bindparam('thread_id', thread_id), bindparam('total_threads', total_threads - 1)]\n            if not hash_variable:\n                query = query.filter(text('ORA_HASH(id, :total_threads) = :thread_id').bindparams(*bindparams))\n            else:\n                query = query.filter(text('ORA_HASH(%s, :total_threads) = :thread_id' % (hash_variable)).bindparams(*bindparams))\n        elif session.bind.dialect.name == 'mysql':\n            if not hash_variable:\n                query = query.filter(text('mod(md5(id), %s) = %s' % (total_threads, thread_id)))\n            else:\n                query = query.filter(text('mod(md5(%s), %s) = %s' % (hash_variable, total_threads, thread_id)))\n        elif session.bind.dialect.name == 'postgresql':\n            if not hash_variable:\n                query = query.filter(text('mod(abs((\\'x\\'||md5(id::text))::bit(32)::bigint), %s) = %s' % (total_threads, thread_id)))\n            else:\n                query = query.filter(text('mod(abs((\\'x\\'||md5(%s::text))::bit(32)::bigint), %s) = %s' % (hash_variable, total_threads, thread_id)))\n    return query\n", "path": "lib/rucio/db/sqla/__init__.py"}]}