users-list August 2011

users-list@monetdb.org

13 participants
19 discussions

[MonetDB-users] MonetDB JDBC 1.9 question

by Charalampos Nikolaou

Hi, I am getting some strange exceptions using MonetDB JDBC 1.8/1.9, and I decided to look into the code. While inspecting the code I came across these strange lines in MonetConnection.executeQuery(String[] templ, String query) method (http://dev.monetdb.org/hg/MonetDB/file/718da8ca0a1a/java/src/nl/cwi/monetdb…). In my case, these lines are executed for sure when doing a batch insert. So, suppose that the batch contains the following commands (as constructed by the MonetStatement.executeBatch() method): exec 1(1, 957339737330229055); exec 1(2, 278262503670654331); exec 1(805306369, 3763943296910752235) The lines in question take the above commands as a string, prepend a 's' character and append a ';' at the end. The resulting commands, which are written in the server's socket, are the following: sexec 1(1, 957339737330229055); exec 1(2, 278262503670654331); exec 1(805306369, 3763943296910752235); First of all, I am not familiar with the internals of JDBC drivers. Taking this into account, is this what it should be? From a symmetric point of view, I would assume that the correct would be the following: sexec 1(1, 957339737330229055); sexec 1(2, 278262503670654331); sexec 1(805306369, 3763943296910752235); That is, it should prepend a 's' character before an exec command. Last, are these exec commands (with or without a prepending 's') specific to MonetDB? In either case, is there any documentation to get familiar with their meaning? Thanks a lot, Babis

10 years, 5 months

[MonetDB-users] protocol violation: unexpected line in data block

by tangray

the whole log file : RD 1298855541531: read final block: 57 bytes RX 1298855541531: onxRWd3Yv:mserver:9:RIPEMD160,SHA256,SHA1,MD5:LIT:SHA512: RD 1298855541531: inserting prompt TD 1298855541531: write final block: 92 bytes TX 1298855541531: BIG:risk:{SHA256}01fa94fefcadb5918473e49aaa8e425538f8d40960b2d649348cb17c599031ae:sql:krisk: RD 1298855541546: read final block: 0 bytes RX 1298855541546: RD 1298855541546: inserting prompt TD 1298855541546: write final block: 48 bytes TX 1298855541546: sSET TIME ZONE INTERVAL '+08:00' HOUR TO MINUTE; RD 1298855541546: read final block: 0 bytes RX 1298855541546: RD 1298855541546: inserting prompt TD 1298855541546: write final block: 15 bytes TX 1298855541546: Xreply_size 250 RD 1298855541546: read final block: 0 bytes RX 1298855541546: RD 1298855541546: inserting prompt TD 1298855541546: write final block: 46 bytes TX 1298855541546: sSELECT "name", "value" FROM sys.env() as env; RD 1298855541546: read final block: 4246 bytes RX 1298855541546: &1 0 46 2 46 % .env, .env # table_name % name, value # name % varchar, varchar # type % 18, 203 # length [ "gdk_arch", "32biti686-pc-win32" ] [ "gdk_version", "1.40.3" ] [ "prefix", "D:\\Program Files\\MonetDB\\MonetDB5" ] [ "exec_prefix", "D:\\Program Files\\MonetDB\\MonetDB5" ] [ "gdk_dbname", "krisk" ] [ "gdk_dbfarm", "C:\\Documents and Settings\\swordtan\\Application Data\\MonetDB5\\dbfarm" ] [ "gdk_debug", "0" ] [ "gdk_alloc_map", "no" ] [ "gdk_vmtrim", "yes" ] [ "monet_admin", "adm" ] [ "monet_prompt", ">" ] [ "monet_welcome", "yes" ] [ "monet_mod_path", "D:\\Program Files\\MonetDB\\MonetDB5\\lib\\MonetDB5;D:\\Program Files\\MonetDB\\MonetDB5\\lib\\MonetDB5\\lib;D:\\Program Files\\MonetDB\\MonetDB5\\lib\\MonetDB5\\bin" ] [ "monet_daemon", "no" ] [ "host", "localhost" ] [ "mapi_port", "50000" ] [ "mapi_clients", "2" ] [ "mapi_open", "true" ] [ "mapi_autosense", "false" ] [ "default_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "minimal_pipe", "inline,remap,deadcode,multiplex,garbageCollector" ] [ "sql_optimizer", "default_pipe" ] [ "sql_debug", "0" ] [ "standoff_ns", "" ] [ "standoff_start", "start" ] [ "standoff_end", "end" ] [ "config", "D:\\Program Files\\MonetDB\\MonetDB5\\etc\\monetdb5.conf" ] [ "mero_pidfile", "D:\\Program Files\\MonetDB\\MonetDB5\\var\\run\\MonetDB\\merovingian.pid" ] [ "mero_controlport", "50001" ] [ "nov2009_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "replication_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,replication,multiplex,garbageCollector" ] [ "accumulator_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,accumulators,dataflow,history,multiplex,garbageCollector" ] [ "recycler_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,deadcode,recycle,reduce,dataflow,history,multiplex,garbageCollector" ] [ "cracker_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,selcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "sidcrack_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,sidcrack,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "datacell_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,deadcode,constants,commonTerms,joinPath,datacell,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "octopus_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,constants,commonTerms,joinPath,octopus,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "mapreduce_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mapreduce,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "datacyclotron_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,datacyclotron,mergetable,deadcode,constants,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,replication,multiplex,garbageCollector" ] [ "derive_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,derivePath,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "dictionary_pipe", "inline,remap,dictionary,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,history,multiplex,garbageCollector" ] [ "compression_pipe", "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,compression,dataflow,history,multiplex,garbageCollector" ] [ "gdk_mem_pagebits", "16" ] [ "gdk_mem_bigsize", "1048576" ] [ "monet_pid", "984" ] [ "monet_version", "5.22.3" ] RD 1298855541546: inserting prompt TD 1298855541562: write final block: 60 bytes TX 1298855541562: sselect * from risk.td_ind_security_held where id = 1560000; RD 1298855541578: read final block: 1600 bytes RX 1298855541578: &1 1 1 30 1 % risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held # table_name % id, bizdate, painnercode, currency, exchange, seccode, basickind, unrealizedgainchange, unrealizedgain, margingain, interestgain, othergain, yieldrate, accrualinterest, allgain, fullmv, marketvalue, lastfullmv, lastmarketvalue, lastcost, cost, buysum, sellsum, realizedgain, holdingqty, lastholdingqty, mvweight, lastmvweight, fullmvweight, lastfullmvweight # name % int, varchar, varchar, varchar, varchar, varchar, varchar, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal # type % 7, 8, 8, 3, 5, 6, 3, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 14, 14, 14, 14 # length RD 1298855541578: inserting prompt TD 1298855762109: write final block: 60 bytes TX 1298855762109: sselect * from risk.td_ind_security_held where id = 1560000; RD 1298855762125: read final block: 1600 bytes RX 1298855762125: &1 2 1 30 1 % risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held # table_name % id, bizdate, painnercode, currency, exchange, seccode, basickind, unrealizedgainchange, unrealizedgain, margingain, interestgain, othergain, yieldrate, accrualinterest, allgain, fullmv, marketvalue, lastfullmv, lastmarketvalue, lastcost, cost, buysum, sellsum, realizedgain, holdingqty, lastholdingqty, mvweight, lastmvweight, fullmvweight, lastfullmvweight # name % int, varchar, varchar, varchar, varchar, varchar, varchar, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal, decimal # type % 7, 8, 8, 3, 5, 6, 3, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 14, 14, 14, 14 # length RD 1298855762125: inserting prompt TD 1298856279453: write final block: 69 bytes TX 1298856279453: sselect id,bizdate from risk.td_ind_security_held where id = 1560000; RD 1298856279453: read final block: 162 bytes RX 1298856279453: &1 3 1 2 1 % risk.td_ind_security_held, risk.td_ind_security_held # table_name % id, bizdate # name % int, varchar # type % 7, 8 # length [ 1560000, "20090702" ] RD 1298856279453: inserting prompt TD 1298856279468: write final block: 1797 bytes TX 1298856279468: sSELECT 'krisk' AS "TABLE_CAT", "schemas"."name" AS "TABLE_SCHEM", "tables"."name" AS "TABLE_NAME", "columns"."name" AS "COLUMN_NAME", cast(CASE "columns"."type" WHEN 'wrd' THEN -5 WHEN 'sec_interval' THEN -5 WHEN 'bigint' THEN -5 WHEN 'timetz' THEN 92 WHEN 'char' THEN 1 WHEN 'int' THEN 4 WHEN 'clob' THEN 2005 WHEN 'month_interval' THEN 4 WHEN 'tinyint' THEN -6 WHEN 'table' THEN 2003 WHEN 'date' THEN 91 WHEN 'double' THEN 8 WHEN 'decimal' THEN 3 WHEN 'timestamptz' THEN 93 WHEN 'timestamp' THEN 93 WHEN 'blob' THEN 2004 WHEN 'real' THEN 7 WHEN 'time' THEN 92 WHEN 'oid' THEN 1111 WHEN 'boolean' THEN 16 WHEN 'smallint' THEN 5 WHEN 'varchar' THEN 12 ELSE 1111 END AS smallint) AS "DATA_TYPE", "columns"."type" AS "TYPE_NAME", "columns"."type_digits" AS "COLUMN_SIZE", "columns"."type_scale" AS "DECIMAL_DIGITS", 0 AS "BUFFER_LENGTH", 10 AS "NUM_PREC_RADIX", cast(CASE "null" WHEN true THEN 1 WHEN false THEN 0 END AS int) AS "NULLABLE", cast(null AS varchar(1)) AS "REMARKS", "columns"."default" AS "COLUMN_DEF", 0 AS "SQL_DATA_TYPE", 0 AS "SQL_DATETIME_SUB", 0 AS "CHAR_OCTET_LENGTH", "columns"."number" + 1 AS "ORDINAL_POSITION", cast(null AS varchar(1)) AS "SCOPE_CATALOG", cast(null AS varchar(1)) AS "SCOPE_SCHEMA", cast(null AS varchar(1)) AS "SCOPE_TABLE", cast(1111 AS smallint) AS "SOURCE_DATA_TYPE", CASE "null" WHEN true THEN CAST ('YES' AS varchar(3)) WHEN false THEN CAST ('NO' AS varchar(3)) END AS "IS_NULLABLE" FROM "sys"."columns" AS "columns", "sys"."tables" AS "tables", "sys"."schemas" AS "schemas" WHERE "columns"."table_id" = "tables"."id" AND "tables"."schema_id" = "schemas"."id" AND LOWER("schemas"."name") LIKE 'risk' AND LOWER("tables"."name") LIKE 'td_ind_security_held' AND LOWER("columns"."name") LIKE 'id' ORDER BY "TABLE_SCHEM", "TABLE_NAME", "ORDINAL_POSITION"; RD 1298856279484: read final block: 853 bytes RX 1298856279484: &1 4 1 22 1 % ., sys.schemas, .tables, .columns, ., .columns, .columns, .columns, ., ., ., ., .columns, ., ., ., ., ., ., ., ., . # table_name % TABLE_CAT, TABLE_SCHEM, TABLE_NAME, COLUMN_NAME, DATA_TYPE, TYPE_NAME, COLUMN_SIZE, DECIMAL_DIGITS, BUFFER_LENGTH, NUM_PREC_RADIX, NULLABLE, REMARKS, COLUMN_DEF, SQL_DATA_TYPE, SQL_DATETIME_SUB, CHAR_OCTET_LENGTH, ORDINAL_POSITION, SCOPE_CATALOG, SCOPE_SCHEMA, SCOPE_TABLE, SOURCE_DATA_TYPE, IS_NULLABLE # name % char, varchar, varchar, varchar, smallint, varchar, int, int, tinyint, tinyint, int, varchar, varchar, tinyint, tinyint, tinyint, int, varchar, varchar, varchar, smallint, varchar # type % 5, 4, 20, 2, 1, 3, 2, 1, 1, 2, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 4, 2 # length [ "krisk", "risk", "td_ind_security_held", "id", 4, "int", 32, 0, 0, 10, 0, NULL, NULL, 0, 0, 0, 1, NULL, NULL, NULL, 1111, "NO" ] RD 1298856279484: inserting prompt TD 1298856279500: write final block: 1802 bytes TX 1298856279500: sSELECT 'krisk' AS "TABLE_CAT", "schemas"."name" AS "TABLE_SCHEM", "tables"."name" AS "TABLE_NAME", "columns"."name" AS "COLUMN_NAME", cast(CASE "columns"."type" WHEN 'wrd' THEN -5 WHEN 'sec_interval' THEN -5 WHEN 'bigint' THEN -5 WHEN 'timetz' THEN 92 WHEN 'char' THEN 1 WHEN 'int' THEN 4 WHEN 'clob' THEN 2005 WHEN 'month_interval' THEN 4 WHEN 'tinyint' THEN -6 WHEN 'table' THEN 2003 WHEN 'date' THEN 91 WHEN 'double' THEN 8 WHEN 'decimal' THEN 3 WHEN 'timestamptz' THEN 93 WHEN 'timestamp' THEN 93 WHEN 'blob' THEN 2004 WHEN 'real' THEN 7 WHEN 'time' THEN 92 WHEN 'oid' THEN 1111 WHEN 'boolean' THEN 16 WHEN 'smallint' THEN 5 WHEN 'varchar' THEN 12 ELSE 1111 END AS smallint) AS "DATA_TYPE", "columns"."type" AS "TYPE_NAME", "columns"."type_digits" AS "COLUMN_SIZE", "columns"."type_scale" AS "DECIMAL_DIGITS", 0 AS "BUFFER_LENGTH", 10 AS "NUM_PREC_RADIX", cast(CASE "null" WHEN true THEN 1 WHEN false THEN 0 END AS int) AS "NULLABLE", cast(null AS varchar(1)) AS "REMARKS", "columns"."default" AS "COLUMN_DEF", 0 AS "SQL_DATA_TYPE", 0 AS "SQL_DATETIME_SUB", 0 AS "CHAR_OCTET_LENGTH", "columns"."number" + 1 AS "ORDINAL_POSITION", cast(null AS varchar(1)) AS "SCOPE_CATALOG", cast(null AS varchar(1)) AS "SCOPE_SCHEMA", cast(null AS varchar(1)) AS "SCOPE_TABLE", cast(1111 AS smallint) AS "SOURCE_DATA_TYPE", CASE "null" WHEN true THEN CAST ('YES' AS varchar(3)) WHEN false THEN CAST ('NO' AS varchar(3)) END AS "IS_NULLABLE" FROM "sys"."columns" AS "columns", "sys"."tables" AS "tables", "sys"."schemas" AS "schemas" WHERE "columns"."table_id" = "tables"."id" AND "tables"."schema_id" = "schemas"."id" AND LOWER("schemas"."name") LIKE 'risk' AND LOWER("tables"."name") LIKE 'td_ind_security_held' AND LOWER("columns"."name") LIKE 'bizdate' ORDER BY "TABLE_SCHEM", "TABLE_NAME", "ORDINAL_POSITION"; RD 1298856279515: read final block: 862 bytes RX 1298856279515: &1 5 1 22 1 % ., sys.schemas, .tables, .columns, ., .columns, .columns, .columns, ., ., ., ., .columns, ., ., ., ., ., ., ., ., . # table_name % TABLE_CAT, TABLE_SCHEM, TABLE_NAME, COLUMN_NAME, DATA_TYPE, TYPE_NAME, COLUMN_SIZE, DECIMAL_DIGITS, BUFFER_LENGTH, NUM_PREC_RADIX, NULLABLE, REMARKS, COLUMN_DEF, SQL_DATA_TYPE, SQL_DATETIME_SUB, CHAR_OCTET_LENGTH, ORDINAL_POSITION, SCOPE_CATALOG, SCOPE_SCHEMA, SCOPE_TABLE, SOURCE_DATA_TYPE, IS_NULLABLE # name % char, varchar, varchar, varchar, smallint, varchar, int, int, tinyint, tinyint, int, varchar, varchar, tinyint, tinyint, tinyint, int, varchar, varchar, varchar, smallint, varchar # type % 5, 4, 20, 7, 2, 7, 1, 1, 1, 2, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 4, 2 # length [ "krisk", "risk", "td_ind_security_held", "bizdate", 12, "varchar", 8, 0, 0, 10, 0, NULL, NULL, 0, 0, 0, 2, NULL, NULL, NULL, 1111, "NO" ] RD 1298856279515: inserting prompt TD 1298856508906: write final block: 77 bytes TX 1298856508906: sselect id,bizdate,allgain from risk.td_ind_security_held where id = 1560000; RD 1298856508906: read final block: 187 bytes RX 1298856508906: &1 6 1 3 1 % risk.td_ind_security_held, risk.td_ind_security_held, risk.td_ind_security_held # table_name % id, bizdate, allgain # name % int, varchar, decimal # type % 7, 8, 20 # length RD 1298856508906: inserting prompt

10 years, 7 months

[MonetDB-users] Maximum Parallelism and Recommended Hardware for MonetDB

by brien colwell

I set up a MonetDB server for a data mining team on a single node. The node's specs are 32 cores (4x8 AMD 2.3GHz) 128GiB RAM, with the dbfarm on a RAID0 2xSSD (I think they are Intel SSDs). MonetDB on this hardware works well for aggregates and joins on integers, but chugs considerably on inline views with strings and joins with strings. The team usually has 2-3 concurrent jobs at any given time, some materializing new tables, with lots of bulk loading ("copy into ... from file ..."). A typical table size is 2GiB, and queries may join 5-10 tables. When I look at process activity on the node, I usually see each DB's mserver5 process pegged on CPU, using just a single core. Since I rarely see more than one core used per mserver5, I'm starting to think either I haven't configured MonetDB to favor parallel plans, or I chose the wrong hardware for MonetDB. So, as questions to everyone on the list, I'm curious 1) Are there knobs in MonetDB to favor parallel execution plans? 2) What's the ideal hardware for a single-node MonetDB server to support a workload of 2-5 concurrent queries? 3) What's the ideal disk configuration for the above? Brien

10 years, 10 months

[MonetDB-users] How to compress a table

by Alexis Berlemont

Hi, I am currently trying to evaluate MonetDB as a solution to hold significant amounts of data. Because of limited storage capacities, I am trying to enable compression in MonetDB. I did not manage to find any tutorial on that subject, so I did not go very far. I cannot even tell that I wholly understand the problem. According to the page "Documentation->User Guide->compression", I understood that I had to inject a compression optimizer inside a pipeline. This "thing" is supposed to be possible via the setting of a sql environment variable named "optimizer". In the (generated) source file monetdb5/optimizer/opt_pipes.c, I found a default + compression pipeline. Then, in a mclient session, I typed: sql>set optimizer='inline,remap,evaluate,costModel,coercions,emptySet,aliases,mergetable,deadcode,constants,commonTerms,joinPath,deadcode,reduce,dataflow,compression,dataflow,history,multiplex,garbageCollector'; After that, I tried to use a sql function which was supposed to compress (thanks to the zlib) a table: sql.gzcompress sql>call gzcompress(myschema, mytable); Unfortunately, I am stuck here with the error message 'SELECT: identifier 'myschema' unknown'. I think I located the error message in "sql/server/rel_select.c" but I did not manage to deduce anything interesting. Do you have any idea ? Thanks in advance. Alexis.

10 years, 10 months

[MonetDB-users] How to change in/out date format

by Eugene Prokopiev

Hi, is it possible to use "yy-MM-dd HH:mm:ss.SSS" date format via something like SET DATESTYLE in COPY INTO ... FROM ... with mclient to reuse existing files? -- Thanks, Eugene Prokopiev

10 years, 10 months

[MonetDB-users] query time

by anagnostes

Hi. I would like to know if it's possible to get the query time using the input "\<file" and redirecting the output to "\>file" in Windows. When i use the input file it nevers throws the query time. So i can't know it. Thank you. -- View this message in context: http://old.nabble.com/query-time-tp32232809p32232809.html Sent from the monetdb-users mailing list archive at Nabble.com.

10 years, 10 months

[MonetDB-users] Memory leaks in the latest trunk?

by Stefan de Konink

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hello, Recently I decided it was again a good idea(tm) to 'test' the latest MonetDB trunk on an updated dataset. Sadly over the last 6 days I observed a growing memory usage, today resulting in a segmentation fault. For now nothing more than mserver5[26142]: segfault at 8 ip 00007f1e1e592a31 sp 00007f1e00ca63b8 error 4 in libc-2.13.so[7f1e1e515000+17d000] is known to me, which is development wise totally useless. But an other question did arise: is testing currently taking memory into a count? Especially longer tests might show greater usage of memory. It is obviously no problem replay all the queries that ran against the database and valgrind it... but there might have been work done from development respective that can shed light over the problems. Stefan -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEAREKAAYFAk5OiAAACgkQYH1+F2Rqwn3d+ACdH5ySymgx46EON89qdnlYof39 ZHsAn1LjL9eOHncOjM99+wAupwMC6OR3 =BsVB -----END PGP SIGNATURE-----

10 years, 10 months

[MonetDB-users] Does MonetDB support materialized view or not?

by Ken Cheng

Hi All, Does MonetDB support materialized view or not? Yours sincerely, Ken Cheng

10 years, 10 months

[MonetDB-users] stack protector error

by Michael Sioutis

Hello, I get an error when trying to compile latest MonetDB default branch on my Ubuntu 10.04 64bit machine. bootstrap: OK configure (../configure --prefix=/opt/MonetDB/ --enable-monetdb5 --enable-sql --enable-rdf --enable-geom --enable-bits=64 --enable-debug --enable-datacell): OK make -j2: ERROR The error is: ../../gdk/gdk_batop.mx: In function ‘BATsetprop’: ../../gdk/gdk_batop.mx:2890: error: not protecting function: no buffer at least 8 bytes long I think flags -fstack-protector-all and -Wstack-protector are to blame, they default to 8 bytes. I can skip the problem if I set 8 byte long dummy buffers to EVERY function that doesn't have such a buffer, e.g., char mybuf[8]; memset(buf, 0, sizeof(buf)); I also thought of setting the buffer size to 1, by passing --param spp-buffer-size=1 as a compiler option, but then I get various other errors. gcc version: gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3 Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Mike

10 years, 11 months

[MonetDB-users] Current Pathfinder list/team

by Anton Kolev

Gentlemen, Which is the proper current list (or personal contact) for the Pathfinder related questions? Are there recent work after Mar2011 branch [1]? Thank you in advance, Anton [1] http://dev.monetdb.org/hg/MonetDB/file/932a58fecbde/pathfinder

10 years, 11 months

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users-list August 2011