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214 Commits (d9a9a3263b17b3f9f29b5cf642cc2d564755fbcf)

Author SHA1 Message Date
Jeff Davis a2b698a766 rename cstore_tableam -> columnar 2020-11-19 12:15:51 -08:00
Sait Talha Nisanci ddc8e6c702 Initialize entry variable as NULL 2020-11-19 15:23:39 +03:00
Hadi Moshayedi 97cba2d5b6 Implements write state management for tuple inserts. 
TableAM API doesn't allow us to pass around a state variable along all of the tuple inserts belonging to the same command. We require this in columnar store, since we batch them, and when we have enough rows we flush them as stripes.

To do that, we keep a (relfilenode) -> stack of (subxact id, TableWriteState) global mapping.

**Inserts**

Whenever we want to insert a tuple, we look up for the relation's relfilenode in this mapping. If top of the stack matches current subtransaction, we us the existing TableWriteState. Otherwise, we allocate a new TableWriteState and push it on top of stack.

**(Sub)Transaction Commit/Aborts**

When the subtransaction or transaction is committed, we flush and pop all entries matching current SubTransactionId.

When the subtransaction or transaction is committed, we pop all entries matching current SubTransactionId and discard them without flushing.

**Reads**

Since we might have unwritten rows which needs to be read by a table scan, we flush write states on SELECTs. Since flushing the write state of upper transactions in a subtransaction will cause metadata being written in wrong subtransaction, we ERROR out if any of the upper subtransactions have unflushed rows.

**Table Drops**

We record in which subtransaction the table was dropped. When committing a subtransaction in which table was dropped, we propagate the drop to upper transaction. When aborting a subtransaction in which table was dropped, we mark table as not deleted.
 2020-11-17 12:07:16 -08:00
Nils Dijk 725f4a37d0
change configure to not have options 2020-11-17 19:01:54 +01:00
Nils Dijk 7c891a01a9 create missing objects during upgrade path 2020-11-17 19:01:51 +01:00
Hadi Moshayedi 691fdb2c64
Don't grab in additional locks cstore code when truncating 2020-11-17 18:55:36 +01:00
Nils Dijk d065bb495d
Prepare downgrade script and bump development version to 10.0-1 2020-11-17 18:55:35 +01:00
Nils Dijk 3e5df81e89
remove use of banned api 2020-11-17 18:55:35 +01:00
Nils Dijk b6d4a1bbe2
fix style 2020-11-17 18:55:35 +01:00
Nils Dijk 213eb93e6d
make columnar compile and functionally working 2020-11-17 18:55:34 +01:00
Nils Dijk f89bd3eeb5
move columnar test files 2020-11-17 18:55:34 +01:00
Nils Dijk 30fbd877e7
remove readme that has outdated info 2020-11-17 18:55:34 +01:00
Nils Dijk 527d3ce0bb
move headers to include directory 2020-11-17 18:55:34 +01:00
Nils Dijk 5fe4c12d49 Add 'src/backend/columnar/' from commit '4339e911933ca2109db46014befdaccf77c5c13f' 
git-subtree-dir: src/backend/columnar
git-subtree-mainline: 34de1f645c
git-subtree-split: 4339e91193
 2020-11-17 18:55:06 +01:00