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In preparation for a simplified, lower-level recovery of binlog files implemented in InnoDB, remove use of InnoDB tablespaces and buffer pool from the binlog code. Instead, a custom binlog page fifo replaces the general buffer pool for binlog pages, and tablespaces are replaced by simple file_no references. The new binlog page fifo is deliberately naively written in this commit for simplicity, until the new recovery is complete and proven with tests; later it can be improved for better efficiency and scalability. This first version uses a simple global mutex, linear scans of linked lists, repeated alloc/free of pages, and simple backgrund flush thread that uses synchroneous pwrite() one page after another. Error handling is also mostly omitted in this first version. The page header/footer is not changed in this commit, nor is the pagesize, to be done in a later patch. The call to mtr_t::write_binlog() is currently commented-out in function fsp_log_binlog_write() as it asserts in numerous places. To be enabled when those asserts are fixed. For the same reason, the code does not yet implement binlog_write_up_to(lsn_t lsn), to be done once mtr_t operations are working. Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org> |
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| .. | ||
| archive | ||
| blackhole | ||
| columnstore | ||
| connect | ||
| csv | ||
| example | ||
| federated | ||
| federatedx | ||
| heap | ||
| innobase | ||
| maria | ||
| mroonga | ||
| myisam | ||
| myisammrg | ||
| oqgraph | ||
| perfschema | ||
| rocksdb | ||
| sequence | ||
| sphinx | ||
| spider | ||
| test_sql_discovery | ||