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HailDB A NoSQL API direct to InnoDB Stewart Smith

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What is HailDB?

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What is InnoDB?

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ACID database enigne

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Commonly found in MySQL

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Originally was separate

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Been in MySQL “forever”

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HailDB and InnoDB have...

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Features you'd expect

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Exposed through SQL

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Really an interface to an InnoDB API

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InnoDB internal API

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Complex and sometimes MySQL specific

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HailDB history

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Embedded InnoDB

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A couple of releases...

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Abandoned?

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Enter HailDB

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Completely free and open source project

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http://www.haildb.com

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Launchpad

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$ bzr branch lp:haildb

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Tarball releases

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Packaged in Ubuntu Natty

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Packaged in drizzle-developers PPA

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Also RPMs

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(Currently) no Win32 release

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Source compatible with embedded_innodb

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libhaildb.so

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haildb.h

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Pandora-build provides autoconf foo

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What HailDB Provides

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Cursor based API

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Transactions

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Key lookups

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Index scans

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DIY Joins

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Updates

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Inserts

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Deletes

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Use cases

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Embedded, fast, concurrent, relational database

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Not arbitrary queries

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Not SQL

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High-Performance Storage Services Using HailDB and Java Ballroom E, 2:50pm Thursday

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Engine for SQL DB

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Using the API

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ib_init()

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ib_cfg_set_int()

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ib_cfg_set_bool_on|off()

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ib_cfg_set_text()

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Set callbacks

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ib_startup(“barracuda”)

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ib_shutdown(flag)

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DDL

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ib_database_create() ib_database_drop()

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ib_table_create()

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ib_table_drop()

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ib_table_truncate()

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Transactions

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ib_trx_begin()

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ib_trx_commit() ib_trx_rollback()

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ib_savepoint_take() ib_savepoint_release() ib_savepoint_rollback()

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Cursors

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ib_cursor_open_table()

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ib_cursor_close()

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ib_cursor_reset()

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Position a cursor, perform row operations

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Tuples

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Represents columns from table record or secondary index

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ib_tpl_t tpl = ib_clust_read_tuple_create(cursor)

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ib_col_set_value()

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ib_col_get_value()

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Examples

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Full Table Scan

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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ib_tpl_t tpl= ib_clust_read_tuple_create(crsr); err= ib_cursor_first(crsr); while (err == DB_SUCCESS) { err= ib_cursor_read_row(crsr, tpl); /* Handle locking and timeout errors */ ib_tuple_read...(); err= ib_cursor_next(crsr); /* Handle locking and timeout errors */ tpl= ib_tuple_clear(tpl); } ib_tuple_delete(tpl);

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Insert a row

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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ib_err_t err; ib_tpl_t tpl; tpl= ib_clust_read_tuple_create(crsr); /* INSERT … VALUES (“a”, “b”, 100); */ ib_col_set_value(tpl, 0, “a”, strlen(“a”)); ib_col_set_value(tpl, 1, “b”, strlen(“b”)); ib_tuple_write_i32(tpl, 2, 100); err= ib_cursor_insert_row(crsr, tpl); /* Handle errors. e.g. duplicate key */ ib_tuple_delete(tpl);

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Updating a row

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Delete

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ib_tuple_delete()

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WHERE clause

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Table statistics

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HailDB

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Questions?