[MDEV-560] Cassandra: DynCols: Server crashes in ha_cassandra::read_cassandra_columns on reading from a dynamic column Created: 2012-09-28  Updated: 2012-09-28  Resolved: 2012-09-28

Status: Closed
Project: MariaDB Server
Component/s: None
Affects Version/s: None
Fix Version/s: 10.0.0

Type: Bug Priority: Major
Reporter: Elena Stepanova Assignee: Oleksandr Byelkin
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
Relates
relates to MDEV-377 Name support for dynamic columns Closed
relates to MDEV-431 Cassandra storage engine Closed

 Description   

Important: please check that the column family structure is a valid one, I made some guesses on top of what was discussed before, could have gone wrong. See the structure below in the test case.

Test case:

# Make sure your cassandra is running,
# and thrift is on LD_LIBRARY_PATH,
# and cqlsh and cassandra-cli are on the system PATH
 
--source include/have_cassandra.inc
 
--remove_files_wildcard $MYSQLTEST_VARDIR test.cql
--write_file $MYSQLTEST_VARDIR/test.cql
DROP KEYSPACE bug_ks;
EOF
--error 0,1,2
--system cqlsh -3 -f $MYSQLTEST_VARDIR/test.cql
 
--remove_file $MYSQLTEST_VARDIR/test.cql
--write_file $MYSQLTEST_VARDIR/test.cql
CREATE KEYSPACE bug_ks
  WITH strategy_class = 'org.apache.cassandra.locator.SimpleStrategy'
   AND strategy_options:replication_factor='1';
EOF
 
--error 0,1,2
--system cqlsh -3 -f $MYSQLTEST_VARDIR/test.cql
 
--remove_file $MYSQLTEST_VARDIR/test.cql
--write_file $MYSQLTEST_VARDIR/test.cql
USE bug_ks;
CREATE COLUMN FAMILY cf1 
  WITH comparator = UTF8Type
    AND key_validation_class=Int32Type
    AND default_validation_class = UTF8Type;
EOF
 
--system cassandra-cli -f $MYSQLTEST_VARDIR/test.cql
 
DROP TABLE IF EXISTS t2;
CREATE TABLE t2 (rowkey int PRIMARY KEY, dyn blob DYNAMIC_COLUMN_STORAGE=yes) 
ENGINE=CASSANDRA thrift_host='localhost' keyspace='bug_ks' column_family = 'cf1';
DELETE FROM t2;
insert into t2 values (1, column_create("dyn", 1));
select rowkey, column_list(dyn) from t2;
 
# Cleanup
DROP TABLE t2;

#4  <signal handler called>
#5  0x085670e8 in ha_cassandra::read_cassandra_columns (this=0xa26e0e0, unpack_pk=true) at 5.5-cassandra-dyncol-read/storage/cassandra/ha_cassandra.cc:1698
#6  0x085681d1 in ha_cassandra::rnd_next (this=0xa26e0e0, buf=0xa26e540 "\376") at 5.5-cassandra-dyncol-read/storage/cassandra/ha_cassandra.cc:1990
#7  0x081ec893 in handler::ha_rnd_next (this=0xa26e0e0, buf=0xa26e540 "\376") at 5.5-cassandra-dyncol-read/sql/sql_class.h:4263
#8  0x084ee078 in rr_sequential (info=0xa21ec80) at 5.5-cassandra-dyncol-read/sql/records.cc:452
#9  0x0829efe2 in join_init_read_record (tab=0xa21ec28) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:16949
#10 0x0829d201 in sub_select (join=0xa21e238, join_tab=0xa21ec28, end_of_records=false) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:16095
#11 0x0829cb29 in do_select (join=0xa21e238, fields=0xa16f988, table=0x0, procedure=0x0) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:15768
#12 0x0827f320 in JOIN::exec (this=0xa21e238) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:2824
#13 0x0827faf4 in mysql_select (thd=0xa16de60, rref_pointer_array=0xa16fa30, tables=0xa21dd98, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147748608, result=0xa21e228, unit=0xa16f440, select_lex=0xa16f8f0) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:3044
#14 0x08277622 in handle_select (thd=0xa16de60, lex=0xa16f3dc, result=0xa21e228, setup_tables_done_option=0) at 5.5-cassandra-dyncol-read/sql/sql_select.cc:313
#15 0x082531b6 in execute_sqlcom_select (thd=0xa16de60, all_tables=0xa21dd98) at 5.5-cassandra-dyncol-read/sql/sql_parse.cc:4621
#16 0x0824c201 in mysql_execute_command (thd=0xa16de60) at 5.5-cassandra-dyncol-read/sql/sql_parse.cc:2189
#17 0x0825578c in mysql_parse (thd=0xa16de60, rawbuf=0xa21dab0 "select rowkey, column_list(dyn) from t2", length=39, parser_state=0xacd72d44) at 5.5-cassandra-dyncol-read/sql/sql_parse.cc:5736
#18 0x08249ccb in dispatch_command (command=COM_QUERY, thd=0xa16de60, packet=0xa217e19 "", packet_length=39) at 5.5-cassandra-dyncol-read/sql/sql_parse.cc:1055
#19 0x08249197 in do_command (thd=0xa16de60) at 5.5-cassandra-dyncol-read/sql/sql_parse.cc:794
#20 0x08334eba in do_handle_one_connection (thd_arg=0xa16de60) at 5.5-cassandra-dyncol-read/sql/sql_connect.cc:1253
#21 0x08334a05 in handle_one_connection (arg=0xa16de60) at 5.5-cassandra-dyncol-read/sql/sql_connect.cc:1168
#22 0x0856063a in pfs_spawn_thread (arg=0xa2588e8) at 5.5-cassandra-dyncol-read/storage/perfschema/pfs.cc:1015
#23 0xb76d4e32 in start_thread () from /lib/libpthread.so.0
#24 0xb73e38ee in clone () from /lib/libc.so.6

Query (0xa21dab0): select rowkey, column_list(dyn) from t2
Connection ID (thread ID): 2
Status: NOT_KILLED

bzr version-info

revision-id: sanja@montyprogram.com-20120926190923-oxdeydkyu12bmx1m
date: 2012-09-26 22:09:23 +0300
build-date: 2012-09-28 01:16:25 +0400
revno: 3522



 Comments   
Comment by Oleksandr Byelkin [ 2012-09-28 ]

fixed

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