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CHANGES.txt
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0.6.5
* fix key ordering in range query results with RandomPartitioner
and ConsistencyLevel > ONE (CASSANDRA-1145)
* fix for range query starting with the wrong token range (CASSANDRA-1042)
* page within a single row during hinted handoff (CASSANDRA-1327)
* fix compilation on non-sun JDKs (CASSANDRA-1061)
* remove String.trim() call on row keys in batch mutations (CASSANDRA-1235)
* Log summary of dropped messages instead of spamming log (CASSANDRA-1284)
* Dynamic snitch (CASSANDRA-981)
* fix streaming for keyspaces with hyphens in their name (CASSANDRA-1377)
* fix errors in hard-coded bloom filter optKPerBucket by computing it
algorithmically (CASSANDRA-1220
* remove message deserialization stage, and uncap read/write stages
so slow reads/writes don't block gossip processing (CASSANDRA-1358)
* faster UUIDType, LongType comparisons (CASSANDRA-1386, 1393)
* add jmx port configuration to Debian package (CASSANDRA-1202)
* use mlockall via JNA, if present, to prevent Linux from swapping
out parts of the JVM (CASSANDRA-1214)
0.6.4
* avoid queuing multiple hint deliveries for the same endpoint
(CASSANDRA-1229)
* better performance for and stricter checking of UTF8 column names
(CASSANDRA-1232)
* extend option to lower compaction priority to hinted handoff
as well (CASSANDRA-1260)
* added describe_partitioner Thrift method (CASSANDRA-1047)
* Hadoop jobs no longer require the Cassandra storage-conf.xml
(CASSANDRA-1280, CASSANDRA-1047)
* log thread pool stats when GC is excessive (CASSANDRA-1275)
* log errors in gossip instead of re-throwing (CASSANDRA-1289)
* avoid aborting commitlog replay prematurely if a flushed-but-
not-removed commitlog segment is encountered (CASSANDRA-1297)
* fix duplicate rows being read during mapreduce (CASSANDRA-1042)
* failure detection wasn't closing command sockets (CASSANDRA-1221)
* cassandra-cli.bat works on windows (CASSANDRA-1236)
* pre-emptively drop requests that cannot be processed within RPCTimeout
(CASSANDRA-685)
* add ack to Binary write verb and update CassandraBulkLoader
to wait for acks for each row (CASSANDRA-1093)
* remove gossip message size limit (CASSANDRA-1138)
* parallelize local and remote reads during multiget, and respect snitch
when determining whether to do local read for CL.ONE (CASSANDRA-1317)
* fix read repair to use requested consistency level on digest mismatch,
rather than assuming QUORUM (CASSANDRA-1316)
* process digest mismatch re-reads in parallel (CASSANDRA-1323)
* switch hints CF comparator to BytesType (CASSANDRA-1274)
0.6.3
* retry to make streaming connections up to 8 times. (CASSANDRA-1019)
* reject describe_ring() calls on invalid keyspaces (CASSANDRA-1111)
* fix cache size calculation for size of 100% (CASSANDRA-1129)
* fix cache capacity only being recalculated once (CASSANDRA-1129)
* remove hourly scan of all hints on the off chance that the gossiper
missed a status change; instead, expose deliverHintsToEndpoint to JMX
so it can be done manually, if necessary (CASSANDRA-1141)
* don't reject reads at CL.ALL (CASSANDRA-1152)
* reject deletions to supercolumns in CFs containing only standard
columns (CASSANDRA-1139)
* avoid preserving login information after client disconnects
(CASSANDRA-1057)
* prefer sun jdk to openjdk in debian init script (CASSANDRA-1174)
* detect partioner config changes between restarts and fail fast
(CASSANDRA-1146)
* use generation time to resolve node token reassignment disagreements
(CASSANDRA-1118)
* restructure the startup ordering of Gossiper and MessageService to avoid
timing anomalies (CASSANDRA-1160)
* detect incomplete commit log hearders (CASSANDRA-1119)
* force anti-entropy service to stream files on the stream stage to avoid
sending streams out of order (CASSANDRA-1169)
* remove inactive stream managers after AES streams files (CASSANDRA-1169)
* allow removing entire row through batch_mutate Deletion (CASSANDRA-1027)
* add JMX metrics for row-level bloom filter false positives (CASSANDRA-1212)
* added a redhat init script to contrib (CASSANDRA-1201)
* use midpoint when bootstrapping a new machine into range with not
much data yet instead of random token (CASSANDRA-1112)
* kill server on OOM in executor stage as well as Thrift (CASSANDRA-1226)
* remove opportunistic repairs, when two machines with overlapping replica
responsibilities happen to finish major compactions of the same CF near
the same time. repairs are now fully manual (CASSANDRA-1190)
* add ability to lower compaction priority (default is no change from 0.6.2)
(CASSANDRA-1181)
0.6.2
* fix contrib/word_count build. (CASSANDRA-992)
* split CommitLogExecutorService into BatchCommitLogExecutorService and
PeriodicCommitLogExecutorService (CASSANDRA-1014)
* add latency histograms to CFSMBean (CASSANDRA-1024)
* make resolving timestamp ties deterministic by using value bytes
as a tiebreaker (CASSANDRA-1039)
* Add option to turn off Hinted Handoff (CASSANDRA-894)
* fix windows startup (CASSANDRA-948)
* make concurrent_reads, concurrent_writes configurable at runtime via JMX
(CASSANDRA-1060)
* disable GCInspector on non-Sun JVMs (CASSANDRA-1061)
* fix tombstone handling in sstable rows with no other data (CASSANDRA-1063)
* fix size of row in spanned index entries (CASSANDRA-1056)
* install json2sstable, sstable2json, and sstablekeys to Debian package
* StreamingService.StreamDestinations wouldn't empty itself after streaming
finished (CASSANDRA-1076)
* added Collections.shuffle(splits) before returning the splits in
ColumnFamilyInputFormat (CASSANDRA-1096)
* do not recalculate cache capacity post-compaction if it's been manually
modified (CASSANDRA-1079)
* better defaults for flush sorter + writer executor queue sizes
(CASSANDRA-1100)
* windows scripts for SSTableImport/Export (CASSANDRA-1051)
* windows script for nodetool (CASSANDRA-1113)
* expose PhiConvictThreshold (CASSANDRA-1053)
* make repair of RF==1 a no-op (CASSANDRA-1090)
* improve default JVM GC options (CASSANDRA-1014)
* fix SlicePredicate serialization inside Hadoop jobs (CASSANDRA-1049)
* close Thrift sockets in Hadoop ColumnFamilyRecordReader (CASSANDRA-1081)
0.6.1
* fix NPE in sstable2json when no excluded keys are given (CASSANDRA-934)
* keep the replica set constant throughout the read repair process
(CASSANDRA-937)
* allow querying getAllRanges with empty token list (CASSANDRA-933)
* fix command line arguments inversion in clustertool (CASSANDRA-942)
* fix race condition that could trigger a false-positive assertion
during post-flush discard of old commitlog segments (CASSANDRA-936)
* fix neighbor calculation for anti-entropy repair (CASSANDRA-924)
* perform repair even for small entropy differences (CASSANDRA-924)
* Use hostnames in CFInputFormat to allow Hadoop's naive string-based
locality comparisons to work (CASSANDRA-955)
* cache read-only BufferedRandomAccessFile length to avoid
3 system calls per invocation (CASSANDRA-950)
* nodes with IPv6 (and no IPv4) addresses could not join cluster
(CASSANDRA-969)
* Retrieve the correct number of undeleted columns, if any, from
a supercolumn in a row that had been deleted previously (CASSANDRA-920)
* fix index scans that cross the 2GB mmap boundaries for both mmap
and standard i/o modes (CASSANDRA-866)
* expose drain via nodetool (CASSANDRA-978)
0.6.0-RC1
* JMX drain to flush memtables and run through commit log (CASSANDRA-880)
* Bootstrapping can skip ranges under the right conditions (CASSANDRA-902)
* fix merging row versions in range_slice for CL > ONE (CASSANDRA-884)
* default write ConsistencyLeven chaned from ZERO to ONE
* fix for index entries spanning mmap buffer boundaries (CASSANDRA-857)
* use lexical comparison if time part of TimeUUIDs are the same
(CASSANDRA-907)
* bound read, mutation, and response stages to fix possible OOM
during log replay (CASSANDRA-885)
* Use microseconds-since-epoch (UTC) in cli, instead of milliseconds
* Treat batch_mutate Deletion with null supercolumn as "apply this predicate
to top level supercolumns" (CASSANDRA-834)
* Streaming destination nodes do not update their JMX status (CASSANDRA-916)
* Fix internal RPC timeout calculation (CASSANDRA-911)
* Added Pig loadfunc to contrib/pig (CASSANDRA-910)
0.6.0-beta3
* fix compaction bucketing bug (CASSANDRA-814)
* update windows batch file (CASSANDRA-824)
* deprecate KeysCachedFraction configuration directive in favor
of KeysCached; move to unified-per-CF key cache (CASSANDRA-801)
* add invalidateRowCache to ColumnFamilyStoreMBean (CASSANDRA-761)
* send Handoff hints to natural locations to reduce load on
remaining nodes in a failure scenario (CASSANDRA-822)
* Add RowWarningThresholdInMB configuration option to warn before very
large rows get big enough to threaten node stability, and -x option to
be able to remove them with sstable2json if the warning is unheeded
until it's too late (CASSANDRA-843)
* Add logging of GC activity (CASSANDRA-813)
* fix ConcurrentModificationException in commitlog discard (CASSANDRA-853)
* Fix hardcoded row count in Hadoop RecordReader (CASSANDRA-837)
* Add a jmx status to the streaming service and change several DEBUG
messages to INFO (CASSANDRA-845)
* fix classpath in cassandra-cli.bat for Windows (CASSANDRA-858)
* allow re-specifying host, port to cassandra-cli if invalid ones
are first tried (CASSANDRA-867)
* fix race condition handling rpc timeout in the coordinator
(CASSANDRA-864)
* Remove CalloutLocation and StagingFileDirectory from storage-conf files
since those settings are no longer used (CASSANDRA-878)
* Parse a long from RowWarningThresholdInMB instead of an int (CASSANDRA-882)
* Remove obsolete ControlPort code from DatabaseDescriptor (CASSANDRA-886)
* move skipBytes side effect out of assert (CASSANDRA-899)
* add "double getLoad" to StorageServiceMBean (CASSANDRA-898)
* track row stats per CF at compaction time (CASSANDRA-870)
* disallow CommitLogDirectory matching a DataFileDirectory (CASSANDRA-888)
* default key cache size is 200k entries, changed from 10% (CASSANDRA-863)
* add -Dcassandra-foreground=yes to cassandra.bat
* exit if cluster name is changed unexpectedly (CASSANDRA-769)
0.6.0-beta1/beta2
* add batch_mutate thrift command, deprecating batch_insert (CASSANDRA-336)
* remove get_key_range Thrift API, deprecated in 0.5 (CASSANDRA-710)
* add optional login() Thrift call for authentication (CASSANDRA-547)
* support fat clients using gossiper and StorageProxy to perform
replication in-process [jvm-only] (CASSANDRA-535)
* support mmapped I/O for reads, on by default on 64bit JVMs
(CASSANDRA-408, CASSANDRA-669)
* improve insert concurrency, particularly during Hinted Handoff
(CASSANDRA-658)
* faster network code (CASSANDRA-675)
* stress.py moved to contrib (CASSANDRA-635)
* row caching [must be explicitly enabled per-CF in config] (CASSANDRA-678)
* present a useful measure of compaction progress in JMX (CASSANDRA-599)
* add bin/sstablekeys (CASSNADRA-679)
* add ConsistencyLevel.ANY (CASSANDRA-687)
* make removetoken remove nodes from gossip entirely (CASSANDRA-644)
* add ability to set cache sizes at runtime (CASSANDRA-708)
* report latency and cache hit rate statistics with lifetime totals
instead of average over the last minute (CASSANDRA-702)
* support get_range_slice for RandomPartitioner (CASSANDRA-745)
* per-keyspace replication factory and replication strategy (CASSANDRA-620)
* track latency in microseconds (CASSANDRA-733)
* add describe_ Thrift methods, deprecating get_string_property and
get_string_list_property
* jmx interface for tracking operation mode and streams in general.
(CASSANDRA-709)
* keep memtables in sorted order to improve range query performance
(CASSANDRA-799)
* use while loop instead of recursion when trimming sstables compaction list
to avoid blowing stack in pathological cases (CASSANDRA-804)
* basic Hadoop map/reduce support (CASSANDRA-342)
0.5.1
* ensure all files for an sstable are streamed to the same directory.
(CASSANDRA-716)
* more accurate load estimate for bootstrapping (CASSANDRA-762)
* tolerate dead or unavailable bootstrap target on write (CASSANDRA-731)
* allow larger numbers of keys (> 140M) in a sstable bloom filter
(CASSANDRA-790)
* include jvm argument improvements from CASSANDRA-504 in debian package
* change streaming chunk size to 32MB to accomodate Windows XP limitations
(was 64MB) (CASSANDRA-795)
* fix get_range_slice returning results in the wrong order (CASSANDRA-781)
0.5.0 final
* avoid attempting to delete temporary bootstrap files twice (CASSANDRA-681)
* fix bogus NaN in nodeprobe cfstats output (CASSANDRA-646)
* provide a policy for dealing with single thread executors w/ a full queue
(CASSANDRA-694)
* optimize inner read in MessagingService, vastly improving multiple-node
performance (CASSANDRA-675)
* wait for table flush before streaming data back to a bootstrapping node.
(CASSANDRA-696)
* keep track of bootstrapping sources by table so that bootstrapping doesn't
give the indication of finishing early (CASSANDRA-673)
0.5.0 RC3
* commit the correct version of the patch for CASSANDRA-663
0.5.0 RC2 (unreleased)
* fix bugs in converting get_range_slice results to Thrift
(CASSANDRA-647, CASSANDRA-649)
* expose java.util.concurrent.TimeoutException in StorageProxy methods
(CASSANDRA-600)
* TcpConnectionManager was holding on to disconnected connections,
giving the false indication they were being used. (CASSANDRA-651)
* Remove duplicated write. (CASSANDRA-662)
* Abort bootstrap if IP is already in the token ring (CASSANDRA-663)
* increase default commitlog sync period, and wait for last sync to
finish before submitting another (CASSANDRA-668)
0.5.0 RC1
* Fix potential NPE in get_range_slice (CASSANDRA-623)
* add CRC32 to commitlog entries (CASSANDRA-605)
* fix data streaming on windows (CASSANDRA-630)
* GC compacted sstables after cleanup and compaction (CASSANDRA-621)
* Speed up anti-entropy validation (CASSANDRA-629)
* Fix anti-entropy assertion error (CASSANDRA-639)
* Fix pending range conflicts when bootstapping or moving
multiple nodes at once (CASSANDRA-603)
* Handle obsolete gossip related to node movement in the case where
one or more nodes is down when the movement occurs (CASSANDRA-572)
* Include dead nodes in gossip to avoid a variety of problems
and fix HH to removed nodes (CASSANDRA-634)
* return an InvalidRequestException for mal-formed SlicePredicates
(CASSANDRA-643)
* fix bug determining closest neighbor for use in multiple datacenters
(CASSANDRA-648)
* Vast improvements in anticompaction speed (CASSANDRA-607)
* Speed up log replay and writes by avoiding redundant serializations
(CASSANDRA-652)
0.5.0 beta 2
* Bootstrap improvements (several tickets)
* add nodeprobe repair anti-entropy feature (CASSANDRA-193, CASSANDRA-520)
* fix possibility of partition when many nodes restart at once
in clusters with multiple seeds (CASSANDRA-150)
* fix NPE in get_range_slice when no data is found (CASSANDRA-578)
* fix potential NPE in hinted handoff (CASSANDRA-585)
* fix cleanup of local "system" keyspace (CASSANDRA-576)
* improve computation of cluster load balance (CASSANDRA-554)
* added super column read/write, column count, and column/row delete to
cassandra-cli (CASSANDRA-567, CASSANDRA-594)
* fix returning live subcolumns of deleted supercolumns (CASSANDRA-583)
* respect JAVA_HOME in bin/ scripts (several tickets)
* add StorageService.initClient for fat clients on the JVM (CASSANDRA-535)
(see contrib/client_only for an example of use)
* make consistency_level functional in get_range_slice (CASSANDRA-568)
* optimize key deserialization for RandomPartitioner (CASSANDRA-581)
* avoid GCing tombstones except on major compaction (CASSANDRA-604)
* increase failure conviction threshold, resulting in less nodes
incorrectly (and temporarily) marked as down (CASSANDRA-610)
* respect memtable thresholds during log replay (CASSANDRA-609)
* support ConsistencyLevel.ALL on read (CASSANDRA-584)
* add nodeprobe removetoken command (CASSANDRA-564)
0.5.0 beta
* Allow multiple simultaneous flushes, improving flush throughput
on multicore systems (CASSANDRA-401)
* Split up locks to improve write and read throughput on multicore systems
(CASSANDRA-444, CASSANDRA-414)
* More efficient use of memory during compaction (CASSANDRA-436)
* autobootstrap option: when enabled, all non-seed nodes will attempt
to bootstrap when started, until bootstrap successfully
completes. -b option is removed. (CASSANDRA-438)
* Unless a token is manually specified in the configuration xml,
a bootstraping node will use a token that gives it half the
keys from the most-heavily-loaded node in the cluster,
instead of generating a random token.
(CASSANDRA-385, CASSANDRA-517)
* Miscellaneous bootstrap fixes (several tickets)
* Ability to change a node's token even after it has data on it
(CASSANDRA-541)
* Ability to decommission a live node from the ring (CASSANDRA-435)
* Semi-automatic loadbalancing via nodeprobe (CASSANDRA-192)
* Add ability to set compaction thresholds at runtime via
JMX / nodeprobe. (CASSANDRA-465)
* Add "comment" field to ColumnFamily definition. (CASSANDRA-481)
* Additional JMX metrics (CASSANDRA-482)
* JSON based export and import tools (several tickets)
* Hinted Handoff fixes (several tickets)
* Add key cache to improve read performance (CASSANDRA-423)
* Simplified construction of custom ReplicationStrategy classes
(CASSANDRA-497)
* Graphical application (Swing) for ring integrity verification and
visualization was added to contrib (CASSANDRA-252)
* Add DCQUORUM, DCQUORUMSYNC consistency levels and corresponding
ReplicationStrategy / EndpointSnitch classes. Experimental.
(CASSANDRA-492)
* Web client interface added to contrib (CASSANDRA-457)
* More-efficient flush for Random, CollatedOPP partitioners
for normal writes (CASSANDRA-446) and bulk load (CASSANDRA-420)
* Add MemtableFlushAfterMinutes, a global replacement for the old
per-CF FlushPeriodInMinutes setting (CASSANDRA-463)
* optimizations to slice reading (CASSANDRA-350) and supercolumn
queries (CASSANDRA-510)
* force binding to given listenaddress for nodes with multiple
interfaces (CASSANDRA-546)
* stress.py benchmarking tool improvements (several tickets)
* optimized replica placement code (CASSANDRA-525)
* faster log replay on restart (CASSANDRA-539, CASSANDRA-540)
* optimized local-node writes (CASSANDRA-558)
* added get_range_slice, deprecating get_key_range (CASSANDRA-344)
* expose TimedOutException to thrift (CASSANDRA-563)
0.4.2
* Add validation disallowing null keys (CASSANDRA-486)
* Fix race conditions in TCPConnectionManager (CASSANDRA-487)
* Fix using non-utf8-aware comparison as a sanity check.
(CASSANDRA-493)
* Improve default garbage collector options (CASSANDRA-504)
* Add "nodeprobe flush" (CASSANDRA-505)
* remove NotFoundException from get_slice throws list (CASSANDRA-518)
* fix get (not get_slice) of entire supercolumn (CASSANDRA-508)
* fix null token during bootstrap (CASSANDRA-501)
0.4.1
* Fix FlushPeriod columnfamily configuration regression
(CASSANDRA-455)
* Fix long column name support (CASSANDRA-460)
* Fix for serializing a row that only contains tombstones
(CASSANDRA-458)
* Fix for discarding unneeded commitlog segments (CASSANDRA-459)
* Add SnapshotBeforeCompaction configuration option (CASSANDRA-426)
* Fix compaction abort under insufficient disk space (CASSANDRA-473)
* Fix reading subcolumn slice from tombstoned CF (CASSANDRA-484)
* Fix race condition in RVH causing occasional NPE (CASSANDRA-478)
0.4.0
* fix get_key_range problems when a node is down (CASSANDRA-440)
and add UnavailableException to more Thrift methods
* Add example EndPointSnitch contrib code (several tickets)
0.4.0 RC2
* fix SSTable generation clash during compaction (CASSANDRA-418)
* reject method calls with null parameters (CASSANDRA-308)
* properly order ranges in nodeprobe output (CASSANDRA-421)
* fix logging of certain errors on executor threads (CASSANDRA-425)
0.4.0 RC1
* Bootstrap feature is live; use -b on startup (several tickets)
* Added multiget api (CASSANDRA-70)
* fix Deadlock with SelectorManager.doProcess and TcpConnection.write
(CASSANDRA-392)
* remove key cache b/c of concurrency bugs in third-party
CLHM library (CASSANDRA-405)
* update non-major compaction logic to use two threshold values
(CASSANDRA-407)
* add periodic / batch commitlog sync modes (several tickets)
* inline BatchMutation into batch_insert params (CASSANDRA-403)
* allow setting the logging level at runtime via mbean (CASSANDRA-402)
* change default comparator to BytesType (CASSANDRA-400)
* add forwards-compatible ConsistencyLevel parameter to get_key_range
(CASSANDRA-322)
* r/m special case of blocking for local destination when writing with
ConsistencyLevel.ZERO (CASSANDRA-399)
* Fixes to make BinaryMemtable [bulk load interface] useful (CASSANDRA-337);
see contrib/bmt_example for an example of using it.
* More JMX properties added (several tickets)
* Thrift changes (several tickets)
- Merged _super get methods with the normal ones; return values
are now of ColumnOrSuperColumn.
- Similarly, merged batch_insert_super into batch_insert.
0.4.0 beta
* On-disk data format has changed to allow billions of keys/rows per
node instead of only millions
* Multi-keyspace support
* Scan all sstables for all queries to avoid situations where
different types of operation on the same ColumnFamily could
disagree on what data was present
* Snapshot support via JMX
* Thrift API has changed a _lot_:
- removed time-sorted CFs; instead, user-defined comparators
may be defined on the column names, which are now byte arrays.
Default comparators are provided for UTF8, Bytes, Ascii, Long (i64),
and UUID types.
- removed colon-delimited strings in thrift api in favor of explicit
structs such as ColumnPath, ColumnParent, etc. Also normalized
thrift struct and argument naming.
- Added columnFamily argument to get_key_range.
- Change signature of get_slice to accept starting and ending
columns as well as an offset. (This allows use of indexes.)
Added "ascending" flag to allow reasonably-efficient reverse
scans as well. Removed get_slice_by_range as redundant.
- get_key_range operates on one CF at a time
- changed `block` boolean on insert methods to ConsistencyLevel enum,
with options of NONE, ONE, QUORUM, and ALL.
- added similar consistency_level parameter to read methods
- column-name-set slice with no names given now returns zero columns
instead of all of them. ("all" can run your server out of memory.
use a range-based slice with a high max column count instead.)
* Removed the web interface. Node information can now be obtained by
using the newly introduced nodeprobe utility.
* More JMX stats
* Remove magic values from internals (e.g. special key to indicate
when to flush memtables)
* Rename configuration "table" to "keyspace"
* Moved to crash-only design; no more shutdown (just kill the process)
* Lots of bug fixes
Full list of issues resolved in 0.4 is at https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&&pid=12310865&fixfor=12313862&resolution=1&sorter/field=issuekey&sorter/order=DESC
0.3.0 RC3
* Fix potential deadlock under load in TCPConnection.
(CASSANDRA-220)
0.3.0 RC2
* Fix possible data loss when server is stopped after replaying
log but before new inserts force memtable flush.
(CASSANDRA-204)
* Added BUGS file
0.3.0 RC1
* Range queries on keys, including user-defined key collation
* Remove support
* Workarounds for a weird bug in JDK select/register that seems
particularly common on VM environments. Cassandra should deploy
fine on EC2 now
* Much improved infrastructure: the beginnings of a decent test suite
("ant test" for unit tests; "nosetests" for system tests), code
coverage reporting, etc.
* Expanded node status reporting via JMX
* Improved error reporting/logging on both server and client
* Reduced memory footprint in default configuration
* Combined blocking and non-blocking versions of insert APIs
* Added FlushPeriodInMinutes configuration parameter to force
flushing of infrequently-updated ColumnFamilies