Grant Henke created KUDU-2802:
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Summary: The Java client tableExists should use GetTableSchema
Key: KUDU-2802
URL: https://issues.apache.org/jira/browse/KUDU-2802
Project: Kudu
Issue Type: Improvement
Affects Versions: 1.9.0
Reporter: Grant Henke
Currently the Java client `tableExists()` method uses a ListTables rpc. Instead
it should use a GetTableSchema rpc.
Based on a comment in this
[review|https://gerrit.cloudera.org/#/c/13120/2/java/kudu-backup/src/main/scala/org/apache/kudu/backup/KuduBackup.scala@51]
it could be especially important when authorization via Sentry is enabled:
{quote}
...tableExists() is a bad idea if Sentry integration is enabled. That's because
tableExists() results in a ListTables RPC, and ListTables is going to perform
really poorly with a cold Sentry cache: it'll send an RPC to Sentry for every
table in the catalog. Coupled with the loop here (for each table being backed
up) and it's bad news all around...
{quote}
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