[Impala-ASF-CR] IMPALA-7597: wraps retries around Frontend metadata operations.

["Vuk Ercegovac (Code Review)" <ge...@cloudera.org>]

Hello Bharath Vissapragada, Tianyi Wang, Todd Lipcon, Impala Public Jenkins, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/11608

to look at the new patch set (#5).

Change subject: IMPALA-7597: wraps retries around Frontend metadata operations.
......................................................................

IMPALA-7597: wraps retries around Frontend metadata operations.

When configured to use the local catalog, concurrent metadata
reads and writes can cause the CatalogMetaProvider to throw
an InconsistentMetadataFetchException. Queries have been wrapped
with a retry loop, but the other frontend methods, such listing
table or partition information, can also fail from the same error.
These errors were seen under a workload consisting of concurrent
adding and showing partitions.

This change wraps call-sites (primarily in Frontend.java) that acquire
a Catalog, so have a chance of throwing an InconsistentMetadataFetchExecption.

Testing:
- added a test that checks whether inconsistent metadata exceptions
  are seen in a concurrent workload.

Change-Id: I43a21571d54a7966c5c68bea1fe69dbc62be2a0b
---
M fe/src/main/java/org/apache/impala/service/Frontend.java
M fe/src/main/java/org/apache/impala/service/MetadataOp.java
M tests/custom_cluster/test_local_catalog.py
3 files changed, 264 insertions(+), 101 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/08/11608/5
-- 
To view, visit http://gerrit.cloudera.org:8080/11608
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I43a21571d54a7966c5c68bea1fe69dbc62be2a0b
Gerrit-Change-Number: 11608
Gerrit-PatchSet: 5
Gerrit-Owner: Vuk Ercegovac <ve...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bh...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Tianyi Wang <tw...@cloudera.com>
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Vuk Ercegovac <ve...@cloudera.com>