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Adding other presentation materials.
 new file: presentation_docs/2012-10-23_Prague/Prague_Presentation_20121024.odp new file: presentation_docs/2012-10-23_Prague/Prague_Presentation_20121024.pdf new file: presentation_docs/2013-07-09_UK/MiltonKeynes_Presentation_final.odp new file: presentation_docs/2013-07-09_UK/MiltonKeynes_Presentation_final.pdf new file: presentation_docs/2013-09-16_Chicago/Chicago_Presentation_20130912.odp new file: presentation_docs/2013-09-16_Chicago/Chicago_Presentation_20130912.pdf new file: presentation_docs/2013-09-16_Chicago/demo.txt new file: presentation_docs/2013-09-16_Chicago/pgxc_ctl.conf new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/Demonstration/demo.txt new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/Demonstration/pgxc_ctl.conf.txt new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/XC-upto_1_2.odp new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/XC-upto_1_2.pdf new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/XC_Roadmap.odp new file: presentation_docs/2014-05-19_Ottawa_PGCon_ClusterSummit-XC-Day/XC_Roadmap.pdf new file: presentation_docs/2014-12-12_ChinesePUG/PGConfChina_2014_handout.odp new file: presentation_docs/2014-12-12_ChinesePUG/PGConfChina_2014_handout.pdf new file: presentation_docs/2015-04-16_DTCC2015,Beijing,China/Postgres-XL_XC, Scale-out Approach in PostgreSQL.odp new file: presentation_docs/2015-04-16_DTCC2015,Beijing,China/Postgres-XL_XC, Scale-out Approach in PostgreSQL.pdf
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‎presentation_docs/2012-10-23_Prague/Prague_Presentation_20121024.odp

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‎presentation_docs/2012-10-23_Prague/Prague_Presentation_20121024.pdf

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‎presentation_docs/2013-07-09_UK/MiltonKeynes_Presentation_final.odp

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‎presentation_docs/2013-07-09_UK/MiltonKeynes_Presentation_final.pdf

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‎presentation_docs/2013-09-16_Chicago/Chicago_Presentation_20130912.odp

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‎presentation_docs/2013-09-16_Chicago/Chicago_Presentation_20130912.pdf

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‎presentation_docs/2013-09-16_Chicago/demo.txt

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# Create configuration firstle template
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prepare pgxc_ctl_demo.ctl
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# Let's see how it looks like
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vi pgxc_ctl_demo.ctl
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# Configuration
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show config all
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# Deploy binaries
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deploy all
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# Now initialize everyting: One GTM master, One GTM slave, four GTM proxies,
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# four coordinator masters, four coordinator slaves,
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# four datanode maasters, four datanode slaves
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init all
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# Cluster is already running. Stop it and start again
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stop all
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start all
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# See if everything is running
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monitor all
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# Create default database. Shortcut to select a coordinator involved.
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# The result will be propagated to all the other coordinators and
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# datanodes automatically.
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Createdb koichi
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# Psql is a shortcut to select which cordinator to use.
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# Now create some table.
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Psql
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create table t1 (a int);
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create table t2 (a int) distribute by replication;
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insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),
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(13),(14);
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insert into t2 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),
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(13),(14);
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-- See what data is in each table
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select * from t1;
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-- ORDER BY will help
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select * from t1 order by a;
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-- Replicated table
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select * from t2;
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-- See what rows are stored for a distributed table in each datanode.
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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-- See what rows are stored for a replicated table in each datanode.
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execute direct on (datanode1) 'select * from t2';
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execute direct on (datanode2) 'select * from t2';
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execute direct on (datanode3) 'select * from t2';
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execute direct on (datanode4) 'select * from t2';
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\q
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# Okay, now GTM failover, first, kill it.
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kill gtm master
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# Then gtm slave will work as the master.
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failover gtm
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# Each gtm_proxy should know where the new master is.
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reconnect gtm_proxy all
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# Let's see that still cluster is alive.
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Psql
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select * from t1 order by a;
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select * from t2;
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-- See what rows are stored in each datanode.
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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\q
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# Next, let's kill one of the datanodes
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kill datanode master datanode2
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# We need to failover the slave as the master.
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failover datanode datanode2
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# Let's see that everything is okay.
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Psql
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select * from t1 order by a;
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select * from t2;
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-- See what rows are stored in each datanode.
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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\q
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# Next, we will add a datanode to the server "node10"
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# We need to deploy pgxc binary to this server in advance.
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deploy node10
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# Then add the datanode master.
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# Please note that we can add the slave in a similar manner.
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add datanode master datanode5 node10 20008 /home/koichi/pgxc/nodes/dn_master
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# Let's see what's going on. Table distribution is not affected.
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Psql
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select * from t1 order by a;
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select * from t2;
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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execute direct on (datanode5) 'select * from t1';
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-- Then redistribute tables with new datanode.
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alter table t1 add node (datanode5);
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alter table t2 add node (datanode5);
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-- See the new datanode has some portion of the data.
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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execute direct on (datanode5) 'select * from t1';
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-- See the new datanode has everything of the replicated table.
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execute direct on (datanode1) 'select * from t2';
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execute direct on (datanode2) 'select * from t2';
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execute direct on (datanode3) 'select * from t2';
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execute direct on (datanode4) 'select * from t2';
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execute direct on (datanode5) 'select * from t2';
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-- Next, prepare for revmoving the datanode again.
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-- We need to redistribute tables to exclude removed datanode
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alter table t1 delete node (datanode5);
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alter table t2 delete node (datanode5);
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-- See that datanode5 does not contain any rows. Ready to be removed.
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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execute direct on (datanode5) 'select * from t1';
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-- See that datanode5 does not contain any rows of the replicated table either.
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execute direct on (datanode1) 'select * from t2';
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execute direct on (datanode2) 'select * from t2';
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execute direct on (datanode3) 'select * from t2';
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execute direct on (datanode4) 'select * from t2';
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execute direct on (datanode5) 'select * from t2';
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\q
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## Then remove the datanode.
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remove datanode master datanode5
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# See what is going on.
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Psql
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select * from t1 order by a;
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select * from t2;
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execute direct on (datanode1) 'select * from t1';
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execute direct on (datanode2) 'select * from t1';
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execute direct on (datanode3) 'select * from t1';
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execute direct on (datanode4) 'select * from t1';
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-- Now datanode5 is not a part of the cluster.
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execute direct on (datanode5) 'select * from t1';
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-- See the same in the replicated table.
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execute direct on (datanode1) 'select * from t2';
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execute direct on (datanode2) 'select * from t2';
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execute direct on (datanode3) 'select * from t2';
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execute direct on (datanode4) 'select * from t2';
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-- Then removed 'datanode5'
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execute direct on (datanode5) 'select * from t2';
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\q

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