Distinct聚集 46 ● Motion的Receiver需要接收多个Sender的数据，虽然每个Sender的数据保证 有序，但Receiver端也需要保证数据全局有序。 Sorted Motion 1 4 7 8 2 3 6 9 1 4 2 3 Sender1 Sender2 Receiver1 47 ● 首先读取每个Sender的第一个元素，之后在Receiver端进行归并排序 Sorted

readable_external_table_timeout 1783 repl_catchup_within_range 1783 wal_buffers 1784 wal_compression 1784 wal_sender_timeout 1784 resource_cleanup_gangs_on_wait 1785 resource_select_only 1785 row_security 1785 standby coordinator host. $ gpstate -f The standby coordinator status should be passive, and the WAL sender state should be streaming. For information about the gpstate utility, see the Greenplum Database coordinator status: $ gpstate -f The standby coordinator status should be passive, and the WAL sender state should be streaming. To restore the coordinator and standby instances on original hosts (optional)

random_page_cost 1962 readable_external_table_timeout 1962 repl_catchup_within_range 1963 wal_sender_timeout 1963 resource_cleanup_gangs_on_wait 1963 resource_select_only 1963 runaway_detector_activation_percent and changed features: VMware Greenplum 6.27.1 introduces a new server configuration parameter wal_sender_archiving_status_interval, which sends information about the last archived WAL from primary to standby during common TCP interconnect teardown operations. A timeout mechanism was introduced to ensure that sender(s) have closed the peer end of the receiver's connections. 32314-2 Resolved a problem where logs

random_page_cost 1926 readable_external_table_timeout 1927 repl_catchup_within_range 1927 wal_sender_timeout 1927 resource_cleanup_gangs_on_wait 1927 resource_select_only 1928 runaway_detector_activation_percent during common TCP interconnect teardown operations. A timeout mechanism was introduced to ensure that sender(s) have closed the peer end of the receiver’s connections. 32314-2 Resolved a problem where logs This was due to Greenplum Database running out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect, due to high concurrency (exacerbated by primary segment density –

Documentation VMware, Inc 109 readable_external_table_timeout 1863 repl_catchup_within_range 1863 wal_sender_timeout 1863 resource_cleanup_gangs_on_wait 1863 resource_select_only 1864 runaway_detector_activation_percent during common TCP interconnect teardown operations. A timeout mechanism was introduced to ensure that sender(s) have closed the peer end of the receiver’s connections. 32314-2 Resolved a problem where logs This was due to Greenplum Database running out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect, due to high concurrency (exacerbated by primary segment density –

random_page_cost 1854 readable_external_table_timeout 1855 repl_catchup_within_range 1855 wal_sender_timeout 1855 resource_cleanup_gangs_on_wait 1855 resource_select_only 1856 runaway_detector_activation_percent during common TCP interconnect teardown operations. A timeout mechanism was introduced to ensure that sender(s) have closed the peer end of the receiver's connections. 32314-2 Resolved a problem where logs This was due to Greenplum Database running out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect, due to high concurrency (exacerbated by primary segment density --

random_page_cost 1921 readable_external_table_timeout 1921 repl_catchup_within_range 1922 wal_sender_timeout 1922 resource_cleanup_gangs_on_wait 1922 resource_select_only 1922 runaway_detector_activation_percent during common TCP interconnect teardown operations. A timeout mechanism was introduced to ensure that sender(s) have closed the peer end of the receiver's connections. 32314-2 Resolved a problem where logs This was due to Greenplum Database running out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect, due to high concurrency (exacerbated by primary segment density --

random_page_cost 1637 readable_external_table_timeout 1638 repl_catchup_within_range 1638 wal_sender_timeout 1638 resource_cleanup_gangs_on_wait 1638 resource_select_only 1638 runaway_detector_activation_percent This was due to Greenplum Database running out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect, due to high concurrency (exacerbated by primary segment density – the standby master host. $ gpstate -f The standby master status should be passive, and the WAL sender state should be streaming. For information about the gpstate utility, see the Greenplum Database

VMware Tanzu Greenplum v6.20 Documentation VMware, Inc. 110 repl_catchup_within_range 1658 wal_sender_timeout 1659 resource_cleanup_gangs_on_wait 1659 resource_select_only 1659 runaway_detector_activation_percent already in use” if Greenplum Database runs out of UDP ephemeral ports when creating listener and sender sockets for UDP interconnect. This can occur due to high concurrency (exacerbated by primary segment master must be ready to take over if the primary master fails. Master mirroring uses two processes, a sender on the active master host and a receiver on the mirror host, to synchronize the mirror with the master

random_page_cost 1634 readable_external_table_timeout 1634 repl_catchup_within_range 1635 wal_sender_timeout 1635 resource_cleanup_gangs_on_wait 1635 VMware Greenplum v6.18 Documentation VMware, master must be ready to take over if the primary master fails. Master mirroring uses two processes, a sender on the active master host and a receiver on the mirror host, to synchronize the mirror with the the standby master host. $ gpstate -f The standby master status should be passive, and the WAL sender state should be streaming. For information about the gpstate utility, see the Greenplum Database