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Support recovery of XA transactions

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* Add method `restore_prepared_transaction` to `client_state` class
  which restores a transaction state from storage given its xid.
* Add method `commit_or_rollback_by_xid` to terminate prepared XA
  transactions by xid.
* Make sure that transactions in prepared state are not rolled back
  when their master fails/partitions away.
This commit is contained in:
Daniele Sciascia
2019-03-14 11:30:01 +01:00
parent 98af85498b
commit 052247144f
16 changed files with 210 additions and 31 deletions
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10
include/wsrep/transaction.hpp
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@ -132,6 +132,15 @@ namespace wsrep
return client_service_.is_xa_prepare();
}
int restore_to_prepared_state();
int commit_or_rollback_by_xid(const std::string& xid, bool commit);
const std::string xid() const
{
return client_service_.xid();
}
bool pa_unsafe() const { return pa_unsafe_; }
void pa_unsafe(bool pa_unsafe) { pa_unsafe_ = pa_unsafe; }
@ -262,6 +271,7 @@ namespace wsrep
wsrep::streaming_context streaming_context_;
wsrep::sr_key_set sr_keys_;
wsrep::mutable_buffer apply_error_buf_;
bool is_recovered_xa_;
};
static inline const char* to_c_string(enum wsrep::transaction::state state)