We're updating the issue view to help you get more done. 

Cassandra: DynCols: Server crashes in ha_cassandra::read_cassandra_columns on reading from a dynamic column

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:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 # 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;
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 #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
1 2 3 Query (0xa21dab0): select rowkey, column_list(dyn) from t2 Connection ID (thread ID): 2 Status: NOT_KILLED

bzr version-info

1 2 3 4 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

Environment

None

Status

Assignee

Oleksandr Byelkin

Reporter

Elena Stepanova

Fix versions

Priority

Major