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Fix attempt to replicate empty fragments

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* Adds method wsrep::transaction::streaming_step() so that there is a
  single place where streaming context unit counter is udpated.
  The method also checks that some data has been generated before
  attempting fragment replication.
* Emit a warning if there is an attempt to replicate a fragment and
  there is no data to replicate.
This commit is contained in:
Daniele Sciascia
2019-01-07 11:45:28 +01:00
parent a9e2fdccfc
commit 4ac15e4349
7 changed files with 106 additions and 41 deletions
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include/wsrep/transaction.hpp
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@ -183,6 +183,7 @@ namespace wsrep
wsrep::provider& provider();
void flags(int flags) { flags_ = flags; }
int streaming_step(wsrep::unique_lock<wsrep::mutex>&);
int certify_fragment(wsrep::unique_lock<wsrep::mutex>&);
int certify_commit(wsrep::unique_lock<wsrep::mutex>&);
int append_sr_keys_for_commit();