[Bugfix](mem) Fix memory limit check may overflow #12776
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xinyiZzz
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Sep 22, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
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xinyiZzz
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Sep 22, 2022
* [fix][memtracker] remove gc and fix print * [fix](memory) Fix BE OOM when load -238 fail * [fix](memtracker) Process physical mem check does not include tc/jemalloc allocator cache (#12688) tcmalloc/jemalloc allocator cache does not participate in the mem check as part of the process physical memory. because new/malloc will trigger mem hook when using tcmalloc/jemalloc allocator cache, but it may not actually alloc physical memory, which is not expected in mem hook fail. in addition: The value of tcmalloc/jemalloc allocator cache is used as a mem tracker, the parent is the process mem tracker, which is updated every 1s. Modify the process default mem_limit to 90%. expect mem tracker to effectively limit the memory usage of the process. * Fix memory leak by calling in mem hook (#12708) After the consume mem tracker exceeds the mem limit in the mem hook, the boost stacktrace will be printed. A query/load will only be printed once, and the process tracker will only be printed once per second. After the process memory reaches the upper limit, the boost stacktrace will be printed every second. The observed phenomena are as follows: After query/load is canceled, the memory increases instantly; tcmalloc profile total physical memory is less than perf process memory; The process mem tracker is smaller than the perf process memory; * [fix](memtracker) Fix thread mem tracker try consume accuracy #12782 * [Bugfix](mem) Fix memory limit check may overflow (#12776) This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative. Co-authored-by: Zhengguo Yang <yangzhgg@gmail.com>
FreeOnePlus
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Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
FreeOnePlus
pushed a commit
to FreeOnePlus/doris
that referenced
this pull request
Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
FreeOnePlus
pushed a commit
to FreeOnePlus/doris
that referenced
this pull request
Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
FreeOnePlus
pushed a commit
to FreeOnePlus/doris
that referenced
this pull request
Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
FreeOnePlus
pushed a commit
to FreeOnePlus/doris
that referenced
this pull request
Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
FreeOnePlus
pushed a commit
to FreeOnePlus/doris
that referenced
this pull request
Oct 8, 2022
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
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Proposed changes
Issue Number: close #12775
Problem summary
This bug is because the result of subtracting signed and unsigned numbers may overflow if it is negative.
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If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...