Abhishek Rawat has uploaded a new patch set (#10). ( http://gerrit.cloudera.org:8080/15378 )
Change subject: IMPALA-9466: impala-shell client retry for hs2-http protocol ...................................................................... IMPALA-9466: impala-shell client retry for hs2-http protocol Added retries for idempotent rpcs: OpenSession, PingImpalaHS2Service, GetResultSetMetadata, CloseImpalaOperation (non dmls), CancelOperation, GetOperationStatus, GetRuntimeProfile, GetExecSummary, GetLog Retries were also added to the 'set all' query execution and subsequent result fetch in the ImpalaHS2Client._open_session() The retries are only supported for hs2-http protocol and enabled by default. At most there are 3 tries for a failed rpc with at least 2 second wait duration between tries. Only failed rpcs due to an error in the http transport are retried and if an rpc failed because the server returned an error in the rpc response then such scenarios are not retriable. Improved error diagnostics by dumping stack trace when ImpalaShell. _execute_stmt() gets an 'Unknown Exception'. Testing: - Added a custom_cluster test which injects fault into the http transport and checks expected behavior from the various rpcs. Some of these tests leave the session in an open state and so these tests are not suitable for the e2e test framework which have metric verifiers expecting related metrics to be 0 at the end of the test. - Manually tested real world scenarios with impala-shell client communicating with an impala coordinator via a fault injecting istio mesh. - Manually tested dropping connections on an nginx ingress gateway by sending SIGTERM to all worker processes. Change-Id: I0da9e9e8d34a340eaf763397cc095ff6260d65d5 --- M shell/impala_client.py M shell/impala_shell.py A tests/custom_cluster/test_hs2_fault_injection.py 3 files changed, 491 insertions(+), 49 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/78/15378/10 -- To view, visit http://gerrit.cloudera.org:8080/15378 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: I0da9e9e8d34a340eaf763397cc095ff6260d65d5 Gerrit-Change-Number: 15378 Gerrit-PatchSet: 10 Gerrit-Owner: Abhishek Rawat <ara...@cloudera.com> Gerrit-Reviewer: Abhishek Rawat <ara...@cloudera.com> Gerrit-Reviewer: David Knupp <dkn...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Sahil Takiar <stak...@cloudera.com>
