Hi,

my next test: restart node 10, wich showed 5% data memory usage before.

Now both nodes show a data memory usage of 19% and an even distribution:

eti-dus-ha-cl1_root# ndb_desc -p -d hacom GLOBAL_ID
-- GLOBAL_ID --
Version: 1
Fragment type: 5
K Value: 6
Min load factor: 78
Max load factor: 80
Temporary table: no
Number of attributes: 4
Number of primary keys: 1
Length of frm data: 365
Row Checksum: 1
Row GCI: 1
SingleUserMode: 0
ForceVarPart: 1
FragmentCount: 2
TableStatus: Retrieved
-- Attributes --
ID_GLOBAL_ID Bigint PRIMARY KEY DISTRIBUTION KEY AT=FIXED ST=MEMORY AUTO_INCR
ID_SERVICE Int NULL AT=FIXED ST=MEMORY
GLOBAL_ID Varchar(40;latin1_swedish_ci) NULL AT=SHORT_VAR ST=MEMORY
DATE_INSERT Datetime NOT NULL AT=FIXED ST=MEMORY

-- Indexes --
PRIMARY KEY(ID_GLOBAL_ID) - UniqueHashIndex
REFERENCE_3_FK(ID_SERVICE) - OrderedIndex
PRIMARY(ID_GLOBAL_ID) - OrderedIndex
IDX_STRING(GLOBAL_ID) - OrderedIndex

-- Per partition info --
Partition Row count Commit count Frag fixed memory Frag varsized memory Extent_space Free extent_space
0 1578180 1578409 839942144 42106880 0 0
1 1574362 3158478 835551232 42008576 0 0


NDBT_ProgramExit: 0 - OK

Strange things happen inside of a cluster...

regards

Hendrik Woltersdorf
XCOM AG
Tel.: 0375/27008-580
Tel. mobil: 0178/5710078
Email: Hendrik.Woltersdorf@xcom.de

Inactive hide details for Hendrik Woltersdorf---04.06.2010 12:37:33---Hi, here is the output for the largest table:Hendrik Woltersdorf---04.06.2010 12:37:33---Hi, here is the output for the largest table:

          Hendrik Woltersdorf/DE/XCOM

          04.06.2010 12:37


An

Cluster <cluster@lists.mysql.com>

Kopie


Thema

Antwort: Re: uneven data distributionMail
Hi,

here is the output for the largest table:

eti-dus-ha-cl1_root# ndb_desc -p -d hacom GLOBAL_ID
-- GLOBAL_ID --
Version: 1
Fragment type: 5
K Value: 6
Min load factor: 78
Max load factor: 80
Temporary table: no
Number of attributes: 4
Number of primary keys: 1
Length of frm data: 365
Row Checksum: 1
Row GCI: 1
SingleUserMode: 0
ForceVarPart: 1
FragmentCount: 2
TableStatus: Retrieved
-- Attributes --
ID_GLOBAL_ID Bigint PRIMARY KEY DISTRIBUTION KEY AT=FIXED ST=MEMORY AUTO_INCR
ID_SERVICE Int NULL AT=FIXED ST=MEMORY
GLOBAL_ID Varchar(40;latin1_swedish_ci) NULL AT=SHORT_VAR ST=MEMORY
DATE_INSERT Datetime NOT NULL AT=FIXED ST=MEMORY

-- Indexes --
PRIMARY KEY(ID_GLOBAL_ID) - UniqueHashIndex
REFERENCE_3_FK(ID_SERVICE) - OrderedIndex
PRIMARY(ID_GLOBAL_ID) - OrderedIndex
IDX_STRING(GLOBAL_ID) - OrderedIndex

-- Per partition info --
Partition       Row count       Commit count    Frag fixed memory       Frag varsized memory    Extent_space    Free extent_space
0               1575951         3683447         90505216                42991616                0               0
1               1572050         1579967         835551232               41943040                0               0


NDBT_ProgramExit: 0 - OK

The restarted node does not use MORE memory. The amount is the same before and after the restart.

And yes, this is a table, where we delete periodically lots of rows and it contains a varchar field.

regards

Hendrik Woltersdorf
XCOM AG
Tel.: 0375/27008-580
Tel. mobil: 0178/5710078
Email: Hendrik.Woltersdorf@xcom.de





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