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new 528eaadaf75 [fix](pipeline) premature exit causing core dump during
concurrent pr… (#52850)
528eaadaf75 is described below
commit 528eaadaf75e0cc0ed3084d7a257ac417ebdfbd3
Author: Gabriel <[email protected]>
AuthorDate: Wed Jul 9 10:20:59 2025 +0800
[fix](pipeline) premature exit causing core dump during concurrent pr…
(#52850)
…epare execution (#51492)
Issue Number: close #51491
Problem Summary:
When the queue of the FragmentMgrAsync thread pool is full, newly
submitted tasks are rejected and return early. However, previously
submitted tasks may still be scheduled for execution later. This can
lead to premature destruction of objects such as PipelineFragmentContext
and TPipelineFragmentParams that are referenced by those tasks,
resulting in null pointer exceptions during task execution and
ultimately causing a coredump.
The pr policy is to wait until all previously submitted tasks are
completed before returning.
```
*** SIGSEGV address not mapped to object (@0x1c8) received by PID 3941201
(TID 2115617 OR 0xfe1685bb97f0) from PID 456; stack trace: ***
0# doris::signal::(anonymous namespace)::FailureSignalHandler(int,
siginfo_t*, void*) at
/home/jenkins_agent/workspace/BigDataComponent_doris-unified-arm-release/be/src/common/signal_handler.h:421
1# os::Linux::chained_handler(int, siginfo_t*, void*) in
/usr/jdk64/current/jre/lib/aarch64/server/libjvm.so
2# JVM_handle_linux_signal in
/usr/jdk64/current/jre/lib/aarch64/server/libjvm.so
3# signalHandler(int, siginfo_t*, void*) in
/usr/jdk64/current/jre/lib/aarch64/server/libjvm.so
4# 0x0000FFFF6B2A07C0 in linux-vdso.so.1
5# doris::TUniqueId::TUniqueId(doris::TUniqueId const&) at
/home/jenkins_agent/workspace/BigDataComponent_doris-unified-arm-release/gensrc/build/gen_cpp/Types_types.cpp:2354
6# doris::AttachTask::AttachTask(doris::QueryContext*) at
/home/jenkins_agent/workspace/BigDataComponent_doris-unified-arm-release/be/src/runtime/thread_context.cpp:60
7# std::_Function_handler<void (),
doris::pipeline::PipelineXFragmentContext::_build_pipeline_x_tasks(doris::TPipelineFragmentParams
const&, doris::ThreadPool*)::$_0>::_M_invoke(std::_Any_data const&) at
/usr/lib/gcc/aarch64-linux-gnu/13/../../../../include/c++/13/bits/std_function.h:290
8# doris::ThreadPool::dispatch_thread() at
/home/jenkins_agent/workspace/BigDataComponent_doris-unified-arm-release/be/src/util/threadpool.cpp:552
9# doris::Thread::supervise_thread(void*) at
/home/jenkins_agent/workspace/BigDataComponent_doris-unified-arm-release/be/src/util/thread.cpp:499
10# 0x0000FFFF6AF187AC in /lib64/libpthread.so.0
11# 0x0000FFFF6B16548C in /lib64/libc.so.6
```
Co-authored-by: XLPE <[email protected]>
Co-authored-by: XLPE <[email protected]>
---
.../pipeline_x/pipeline_x_fragment_context.cpp | 38 +++++++++++-----------
be/src/util/countdown_latch.h | 7 ++++
2 files changed, 26 insertions(+), 19 deletions(-)
diff --git a/be/src/pipeline/pipeline_x/pipeline_x_fragment_context.cpp
b/be/src/pipeline/pipeline_x/pipeline_x_fragment_context.cpp
index d54633de29b..e45033b71e3 100644
--- a/be/src/pipeline/pipeline_x/pipeline_x_fragment_context.cpp
+++ b/be/src/pipeline/pipeline_x/pipeline_x_fragment_context.cpp
@@ -726,28 +726,28 @@ Status PipelineXFragmentContext::_build_pipeline_x_tasks(
(_runtime_state->query_options().__isset.parallel_prepare_threshold &&
target_size >
_runtime_state->query_options().parallel_prepare_threshold)) {
Status prepare_status[target_size];
- std::mutex m;
- std::condition_variable cv;
- int prepare_done = 0;
- for (size_t i = 0; i < target_size; i++) {
- RETURN_IF_ERROR(thread_pool->submit_func([&, i]() {
+ int submitted_tasks = 0;
+ Status submit_status;
+ CountDownLatch latch((int)target_size);
+ for (int i = 0; i < target_size; i++) {
+ submit_status = thread_pool->submit_func([&, i]() {
SCOPED_ATTACH_TASK(_query_ctx.get());
prepare_status[i] = pre_and_submit(i, this);
- std::unique_lock<std::mutex> lock(m);
- prepare_done++;
- if (prepare_done == target_size) {
- cv.notify_one();
- }
- }));
+ latch.count_down();
+ });
+ if (LIKELY(submit_status.ok())) {
+ submitted_tasks++;
+ } else {
+ break;
+ }
}
- std::unique_lock<std::mutex> lock(m);
- if (prepare_done != target_size) {
- cv.wait(lock);
-
- for (size_t i = 0; i < target_size; i++) {
- if (!prepare_status[i].ok()) {
- return prepare_status[i];
- }
+ latch.arrive_and_wait(target_size - submitted_tasks);
+ if (UNLIKELY(!submit_status.ok())) {
+ return submit_status;
+ }
+ for (int i = 0; i < submitted_tasks; i++) {
+ if (!prepare_status[i].ok()) {
+ return prepare_status[i];
}
}
} else {
diff --git a/be/src/util/countdown_latch.h b/be/src/util/countdown_latch.h
index a41a417d20f..b27737e8bb1 100644
--- a/be/src/util/countdown_latch.h
+++ b/be/src/util/countdown_latch.h
@@ -91,6 +91,13 @@ public:
}
}
+ // decrements the internal counter by n and blocks the calling thread
until the counter reaches zero.
+ void arrive_and_wait(uint64_t n) {
+ DCHECK_GE(n, 0);
+ count_down(n);
+ wait();
+ }
+
uint64_t count() const {
std::lock_guard<std::mutex> lock(_lock);
return _count;
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