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Maxwell changelog

v1.1.4: "george flunk"

  • add support for a bunch more charsets (gbk, big5, notably)
  • fix Maxwell's handling of kafka errors - previously we were trying to crash Maxwell by throwing a RuntimeException out of the Kafka Producer, but this was a failure. Now we log and skip all errors.

v1.1.3: "the button I push to not have to go out"

This is a bugfix release, which fixes:

  • zendesk#376, a problem parsing RENAME INDEX
  • zendesk#371, a problem with the SERIAL datatype
  • zendesk#362, we now preserve the original casing of columns
  • zendesk#373, we were incorrectly expecting heartbeats to work under 5.1

v1.1.2: "scribbled notes on red pages"

  • pick up latest mysql-connector-j, fixes #369
  • fix an issue where maxwell could skip ahead positions if a leader failed.
  • rework buffering code to be much kinder to the GC and JVM heap in case of very large transactions / rows inside transactions
  • kinder, gentler help text when you specify an option incorrectly

v1.1.1: scribbled notes on blue pages

  • fixes a race condition setting the binlog position that would get maxwell stuck

v1.1.0: "sleep away the afternoon"

  • much more efficient processing of schema updates storage, especially when dealing with large schemas.
  • @lileeyao added --exclude-columns and the --jdbc_options features
  • @lileeyao added --jdbc_options
  • can now blacklist entire databases
  • new kafka key format available, using a JSON array instead of an object
  • bugfix: unsigned integer columns were captured incorrectly. 1.1 will recapture the schema and attempt to correct the error.

v1.1.0-pre4: "buck buck buck buck buck buck-AH!"

  • Eddie McLean gives some helpful patches around bootstrapping
  • Bugfixes for the patch-up-the-schema code around unsigned ints

v1.1.0-pre3:

  • forgot to include some updates that back-patch unsigned column problems

v1.1.0-pre2: "yawn yawn"

  • fix performance issues when capturing schema in AWS Aurora
  • fix a bug in capturing unsigned integer columns

v1.0.1: "bag of oversized daisies"

  • fixes a parsing bug with CURRENT_TIMESTAMP()

v1.0.0: "Maxwell learns to speak"

Since v0.17.0, Maxwell has gotten:

  • bootstrapping support
  • blacklisting for tables
  • flexible kafka partitioning
  • replication heartbeats
  • GEOMETRY columns
  • a whole lotta lotta bugfixes

and I, Osheroff, think the damn thing is stable enough for a 1.0. So there.

v1.0.0-RC3: "C'mon and take it"

pull in support for replication heartbeats. helps in the flakier network environs.

v1.0.0-RC2: "same thing, just without the v"

  • fixes the way ALTER DATABASE charset= was handled
  • adds proper handling of ALTER TABLE CONVERT TO CHARSET

v1.0.0-RC1: "Richard Buckner's release"

  • modifications to the way the bootstrap utility works
  • fix a race condition crash bug in bootstrapping
  • fix a parser bug

v1.0.0-PRE2: "an embarassment of riches"

1.0.0-PRE2 brings in a lot of changes that got merged while we were testing out PRE1. so, hey.

  • Configurable names for the maxwell schema database (Kristian Kaufman)
  • Configurable key (primary key, id, database) into the kafka partition hash function (Kristian Kaufman)
  • Configurable Kafka partition hash function (java hashCode, murmur3) (Kristian Kaufman)
  • support GEOMETRY columns, output as well-known-text
  • add --blacklist_tables option to fully ignore excessive schema changes (Nicolas Maquet)
  • bootstrap rows now have 'bootstrap-insert' type

v1.0.0-PRE1: "drunk conversations with sober people"

  • Here we have the preview release of @nmaquet's excellent work around bootstrapping initial versions of mysql tables.

v0.17.0: "wrists of William"

v0.17 is a large bugfix release with one new feature.

  • FEATURE: allow specifying an alternative mysql schema-storage server and replication server
  • BUGFIX: properly handle case-sensitivity by aping the behavior of the master server. Fixes #230.
  • BUGFIX: parse some forms of CHECK( ... ) statements. Fixes #203.
  • BUGFIX: many more SQL-parser fixes. We are mostly through some thousands of lines of SQL produced by mysql-test.

v0.16.2: "The best laid plans"

This is a large-ish bugfix release.

  • Support, with reservations, binlog_row_image=MINIMAL
  • parser bug: handle table names that look like floating points
  • parser bug: fix for entity names that have '.', '', etc in them
  • handle UPPERCASE encoding names
  • support UCS2 (start trying to operate ok on the mysql-test suite)
  • use ObjectOutputStream.reset to fix memory leaks when buffering to disk

v0.16.1: "me and room service"

This is a bug-fix-roundup release:

  • support ALTER DATABASE
  • fix a bunch of parse errors: we've started running mysql-test at maxwell and are fixing up failures.
  • some modifications to the overflow-to-disk logic; we buffer the input and output, and we fix a memory leak

v0.16.0: "Kristian Kaufmann's version"

Version 0.16.0 introduces a feature where UPDATE statements will now show both the new row image and the old values of the fields that changed. Thanks @kristiankaufmann

v0.15.0: "the littlest little city"

  • fix a parse problem with indices ordered by ASC/DESC

v0.15.0-RC1: "it's later than you think"

  • large transactions now buffer to disk instead of crushing maxwell.
  • support ALGORITHM=[algo], LOCK=[lock] for 5.6 alters

v0.14.6: "It's about being American. Sort of."

  • fix TIME column support
  • fix parsing on millisecond precision column defintions
  • fix CREATE SCHEMA parsing

v0.14.5: "false is the new true"

  • handle BOOLEAN columns with true/false defaults

v0.14.4: "You'd think we'd be at 1.0 by now, wouldn't you?"

  • fixes parsing of "mysql comments" (/*! .. */)
  • More performance improvements, another 10% in a tight loop.

v0.14.3: "Peanuts. My girlfriend thinks about peanuts."

  • fixes a regression in 0.14.2 that creates duplicate copies of the "mysql" database in the schema.

v0.14.2: "Maxwell Sandvik 88"

  • capture the mysql database along with the rest of the schema. Eliding it was a bad premature optimization that led to crashes when tables in the mysql database changed.

v0.14.1: "be liberal in what you accept. Even if nonsensical."

  • fixes a parser bug around named PRIMARY KEYs.

v0.14.0: "the slow but inevitable slide"

This release introduces row filters, allowing you to include or exclude tables from maxwell's output based on names or regular expressions.

v0.13.1: "well that was somewhat expected"

v0.13.1 is a bug fix of v0.13.0 -- fixes a bug where long rows were truncated.

v0.13.0 contains:

  • Big performance boost for maxwell: 75% faster in some benchmarks
  • @davidsheldon contributed some nice bug fixes around CREATE TABLE ... IF NOT EXISTS, which were previously generating new, bogus copies of the schema.
  • we now include a "scavenger thread" that will lazily clean out old, deleted schemas.

v0.13.0: "Malkovich Malkovich Malkovich Sheldon?"

Lucky release number 13 brings some reasonably big changes:

  • Big performance boost for maxwell: 75% faster in some benchmarks
  • @davidsheldon contributed some nice bug fixes around CREATE TABLE ... IF NOT EXISTS, which were previously generating new, bogus copies of the schema.
  • we now include a "scavenger thread" that will lazily clean out old, deleted schemas.

This release has a pretty bad bug. do not use.

v0.12.0: "what do I call them? Slippers? Why, are you jealous?"

  • add support for BIT columns.

v0.11.4: "13 steps"

this is another bugfix release that fixes a problem where the replication thread can die in the middle of processing a transaction event. I really need to fix this at a lower level, ie the open-replicator level.

v0.11.3: ".. and the other half is to take the bugs out"

this is a bugfix release:

  • fix problems with table creation options inside alter statements ( ALTER TABLE foo auto_increment=10 )
  • fix a host of shutdown-procedure bugs

the test suite should also be way more reliable, not like you care.

v0.11.2: "savage acts of unprovoked violence are bad"

This is a bugfix release. It includes:

  • soft deletions of maxwell.schemas to fix A->B->A master swapping without creating intense replication delay
  • detect and fail early if we see binlog_row_image=minimal
  • kill off maxwell if the position thread dies
  • fix a bug where maxwell could pick up a copy of schema from a different server_id (curse you operator precedence!)

v0.11.1: "dog snoring loudly"

  • maxwell gets a very minimal pass at detecting when a master has changed, in which it will kill off schemas and positions from a server_id that no longer is valid. this should prevent the worst of cases.

v0.11.0: "cat waving gently"

This release of Maxwell preserves transaction information in the kafka stream by adding a xid key in the JSON object, as well as a commit key for the final row inside the transaction.

It also contains a bugfix around server_id handling.

v0.10.1: "all 64 of your bases belong to... shut up, internet parrot."

  • proper support for BLOB, BINARY, VARBINARY columns (base 64 encoded)
  • fix a problem with the SQL parser where specifying encoding or collation in a string column in the wrong order would crash
  • make table option parsing more lenient

v0.11.0-RC1: "goin' faster than a rollercoaster"

  • merge master fixes

v0.10.0: "The first word is French"

  • Mysql 5.6 checksum support!
  • some more bugfixes with the SQL parser

v0.11.0-PRE4: "except for that other thing"

  • bugfix on v0.11.0-PRE3

v0.11.0-PRE3: "nothing like a good night's sleep"

  • handle SAVEPOINT within transactions
  • downgrade unhandled SQL to a warning

v0.11.0-PRE2: "you really need to name a PRE release something cutesy?"

  • fixes for myISAM "transactions"

v0.11.0-PRE1: "A slow traffic jam towards the void"

  • fix a server_id bug (was always 1 in maxwell.schemas)
  • JSON output now includes transaction IDs

v0.10.0-RC4: "Inspiring confidence"

  • deal with BINARY flag in string column creation.

v0.9.5: "Long story short, that's why I'm late"

  • handle the BINARY flag in column creation

v0.10.0-RC3: "Except for that one thing"

  • handle "TRUNCATE [TABLE_NAME]" statements

v0.10.0-RC2: "RC2 is always a good sign."

  • fixes a bug with checksum processing.

v0.10.0-RC1: "verify all the things"

  • upgrade to open-replicator 1.3.0-RC1, which brings binlog checksum (and thus easy 5.6.1) support to maxwell.

v0.9.4: "we've been here before"

  • allow a configurable number (including unlimited) of schemas to be stored

v0.9.3: "some days it's just better to stay in bed"

  • bump open-replicator to 1.2.3, which allows processing of single rows greater than 2^24 bytes

v0.9.2: "Cat's tongue"

  • bump open-replicator buffer to 50mb by default
  • log to STDERR, not STDOUT
  • --output_file option for file producer

v0.9.1: "bugs, bugs, bugs, lies, statistics"

  • Maxwell is now aware that column names are case-insenstive
  • fix a nasty bug in which maxwell would store the wrong position after it lost its connection to the master.

v0.9.0: Vanchi says "eat"

Also, vanchi is so paranoid he's worried immediately about this.

  • mysql 5.6 support (without checksum support, yet)
  • fix a bunch of miscellaneous bugs @akshayi1 found (REAL, BOOL, BOOLEAN types, TRUNCATE TABLE)

v0.8.1: "Pascal says Bonjour"

  • minor bugfix release around mysql connections going away.

v0.8.0: the cat never shuts up

  • add "ts" field to row output
  • add --config option for passing a different config file
  • support int1, int2, int4, int8 columns

v0.7.2: "all the sql ladies"

  • handle inline sql comments
  • ignore more user management SQL

v0.7.1: "not hoarders"

  • only keep 5 most recent schemas

v0.7.0: 0.7.0, "alameda"

  • handle CURRENT_TIMESTAMP parsing properly
  • better binlog position sync behavior

v0.6.3: 0.6.3

  • better blacklist for CREATE TRIGGER

v0.6.2: v0.6.2

  • maxwell now ignores SAVEPOINT statements.

v0.6.1: v0.6.1

  • fixes a bug with parsing length-limited indexes.

v0.6.0: kafkakafkakafa

Version 0.6.0 has Maxwell outputting a JSON kafka key, so that one can use Kafka's neat "store the last copy of a key" retention policy. It also fixes a couple of bugs in the query parsing path.

v0.5.0: 0.5.0 -- "People who put commas in column names deserve undefined behavior"

  • maxwell now captures primary keys on tables. We'll use this to form kafka key names later.
  • maxwell now outputs to a single topic, hashing the data by database name to keep a database's updates in order.

v0.4.0: 0.4.0, "unboxed cat"

v0.4.0 fixes some bugs with long-lived mysql connections by adding connection pooling support.

v0.3.0: 0.3.0

This version fixes a fairly nasty bug in which the binlog-position flush thread was sharing a connection with the rest of the system, leading to crashes.

It also enables kafka gzip compression by default.

v0.2.2: 0.2.2

Version 0.2.2 sets up the LANG environment variable, which fixes a bug in utf-8 handling.

v0.2.1: v0.2.1

version 0.2.1 makes Maxwell ignore CREATE INDEX ddl statements and others.

v0.2.0: 0.2.0

This release gets Maxwell storing the last-written binlog position inside the mysql master itself.

v0.1.4: 0.1.4

support --position_file param

v0.1.3: 0.1.3

Adds kafka command line options.

v0.1.1: 0.1.1

v0.1.1, a small bugfix release.

v0.1: 0.1

This is the first possible release of Maxwell that might work. It includes some exceedingly basic kafka support, and JSON output of binlog deltas.