ninsmiracle opened a new issue, #1595:
URL: https://github.com/apache/incubator-pegasus/issues/1595
## Bug Report
When I restart a paused dup app on a recovered servers , the start decree of
the duplication looking for will been loss,and those servers coredump agian.
It also has been occured online.
1. What did you do?
- Begin a duplication task firstly and wait for 5 minutes.
- Shut down two nodes of the master cluster, and then pause the duplication
task.
- One minute later, restart the previously shut down nodes, and resume the
duplication task 10 minutes later.
2. What did you see instead?
There are many coredump with the message
"replica_duplicator::verify_start_decree" in master cluster.
```
#0 0x00007f968e6a01d7 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
glibc-2.17-157.el7_3.1.x86_64 keyutils-libs-1.5.8-3.el7.x86_64
krb5-libs-1.14.1-27.el7_3.x86_64 libcom_err-1.42.9-9.el7.x86_64
libgcc-4.8.5-28.el7_5.1.x86_64 libselinux-2.5-6.el7.x86_64
pcre-8.32-15.el7_2.1.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) #0 0x00007f968e6a01d7 in raise () from /lib64/libc.so.6
#1 0x00007f968e6a18c8 in abort () from /lib64/libc.so.6
#2 0x00007f969378763e in dsn_coredump ()
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/runtime/service_api_c.cpp:93
#3 0x00007f969364dc54 in
dsn::replication::replica_duplicator::verify_start_decree (this=<optimized
out>, start_decree=64525717)
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/replica/duplication/replica_duplicator.cpp:218
#4 0x00007f969365ea05 in dsn::replication::load_from_private_log::run (
this=0xa3016f040)
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/replica/duplication/load_from_private_log.cpp:71
#5 0x00007f96937c4631 in dsn::task::exec_internal (
this=this@entry=0x90e7ce0f0)
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/runtime/task/task.cpp:176
#6 0x00007f96937d9ce2 in dsn::task_worker::loop (this=0x1c05600)
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/runtime/task/task_worker.cpp:224
#7 0x00007f96937d9e60 in dsn::task_worker::run_internal (this=0x1c05600)
at
/home/jiashuo1/work/incubator-pegasus/src/rdsn/src/runtime/task/task_worker.cpp:204
#8 0x00007f9692458a2f in execute_native_thread_routine ()
from
/home/work/app/pegasus/alsgsrv-monetization-master/replica/package/bin/libdsn_utils.so
#9 0x00007f9690263dc5 in start_thread () from /lib64/libpthread.so.0
#10 0x00007f968e76273d in clone () from /lib64/libc.so.6
(gdb) quit
```
3. What version of Pegasus are you using?
[pegasus2.4](https://github.com/apache/incubator-pegasus/tree/v2.4)
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