[jira] [Created] (IMPALA-11153) Expose LOCK_RETRIES/LOCK_RETRY_WAIT_SECONDS settings for user

["Zoltán Borók-Nagy (Jira)" <ji...@apache.org>]

Zoltán Borók-Nagy created IMPALA-11153:
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             Summary: Expose LOCK_RETRIES/LOCK_RETRY_WAIT_SECONDS settings for user
                 Key: IMPALA-11153
                 URL: https://issues.apache.org/jira/browse/IMPALA-11153
             Project: IMPALA
          Issue Type: Bug
          Components: Catalog, Frontend
            Reporter: Zoltán Borók-Nagy


Impala using private static final value for lock retry/wait.

https://github.com/apache/impala/blob/873fe2e5241c5714dfd94a186d524edc1cbad0ad/fe/src/compat-hive-3/java/org/apache/impala/compat/MetastoreShim.java#L142

{noformat}
// Number of retries to acquire an HMS ACID lock.
private static final int LOCK_RETRIES = 10;

// Time interval between retries of acquiring an HMS ACID lock
private static final int LOCK_RETRY_WAIT_SECONDS = 3;
{noformat}

In some cases it would make sense to make these values tunable.

We invoke acquireLock() in these places:
https://github.infra.cloudera.com/CDH/Impala/blob/3ceabc01822f53bb6f174dc29aac56ac3993d389/fe/src/main/java/org/apache/impala/service/Frontend.java#L2169

https://github.infra.cloudera.com/CDH/Impala/blob/7ae6fff71c860f7623fc0bfd3092073128c4959c/fe/src/main/java/org/apache/impala/catalog/Catalog.java#L745
invoked by
https://github.infra.cloudera.com/CDH/Impala/blob/ac62b98ab1d3475d8ece865c67fe90d463c340b5/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#L1936

In Frontend.java it's easy to access the query options. To have the tunables at the CatalogD -side we probably need to extend TDropTableOrViewParams  or TDdlExecRequest.



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