Hello Vihang Karajgaonkar, Gabor Kaszab, Csaba Ringhofer, Impala Public Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/17081
to look at the new patch set (#3).
Change subject: IMPALA-10512: ALTER TABLE ADD PARTITION should bump the write
id for ACID tables
......................................................................
IMPALA-10512: ALTER TABLE ADD PARTITION should bump the write id for ACID tables
ALTER TABLE ADD PARTITION should bump the write id for ACID tables.
Both for INSERT-only and full ACID tables.
For transational tables we are adding partitions in an ACID
transaction in the following sequence:
1. open transaction
2. allocate write id for table
3. add partitions to HMS table
4. commit transaction
However, please note that table metadata modifications are
independent of ACID transactions. I.e. if add partitions succeed,
but we cannot commit the transaction, then we the newly added
partitions won't get removed.
So why are we opening a txn then? We are doing it in order to bump
the write id in a best-effort way. This aids table metadata caching,
so by looking at the table write id we can determine if the cached
table metadata is up-to-date.
Testing:
* added e2e test
Change-Id: Iad247008b7c206db00516326c1447bd00a9b34bd
---
M fe/src/main/java/org/apache/impala/catalog/Catalog.java
M fe/src/main/java/org/apache/impala/catalog/Transaction.java
M fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java
M tests/query_test/test_acid.py
4 files changed, 100 insertions(+), 24 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/81/17081/3
--
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iad247008b7c206db00516326c1447bd00a9b34bd
Gerrit-Change-Number: 17081
Gerrit-PatchSet: 3
Gerrit-Owner: Zoltan Borok-Nagy <borokna...@cloudera.com>
Gerrit-Reviewer: Csaba Ringhofer <csringho...@cloudera.com>
Gerrit-Reviewer: Gabor Kaszab <gaborkas...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Vihang Karajgaonkar <vih...@cloudera.com>
Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com>
