[IMPALA-13111] impala-gdb.py's find-query-ids/find-fragment-instances return unusable query ids

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.5.0
• Fix Version/s: Impala 4.5.0
• Component/s: Infrastructure
• Epic Color: ghx-label-7
• Assignee: Joe McDonnell
• Reporter: Joe McDonnell
• Created: 28/May/24 23:55
• Updated: 31/May/24 23:00
• Resolved: 31/May/24 23:00

Description

The gdb helpers in lib/python/impala_py_lib/gdb/impala-gdb.py provide information about the queries / fragments running in a core file. However, the query/fragment ids that it returns have issues with the signedness of the integers:

(gdb) find-fragment-instances
Fragment Instance Id    Thread IDs
-23b76c1699a831a1:2793586800000036    [117120]
-23b76c1699a831a1:2793586800000037    [117121]
-23b76c1699a831a1:2793586800000038    [117122]
..

(gdb) find-query-ids
-3cbda1606b3ade7c:f170c4bd00000000
-23b76c1699a831a1:2793586800000000
68435df1364aa90f:1752944f00000000
3442ed6354c7355d:78c83d2000000000

The low values for find-query-ids don't have this problem, because it is ANDed with 0xFFFFFFFFFFFF0000:

            qid_low = format(int(qid_low, 16) & 0xFFFFFFFFFFFF0000, 'x')

We can fix the other locations by ANDing with 0xFFFFFFFFFFFFFFFF.