Cui Shijun wrote:
As the insertion algorithm described, a specific partition lock manage some
items, but these items can be stored in anywhere of the hash table,not
necessarily in a bucket chain.
So there are some problems with "different partitions use different hash
chains",
a partition can use different hash chains,too. Am I right?


No, you're still confused. Each bucket in the hash table is a chain. Each chain can have 0, 1, or more items.

I'd suggest that you study how the normal non-partitioned hash tables work first. The partitioning is a straightforward extension of that.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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