Vuk Ercegovac created IMPALA-7408:
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Summary: Add a flag to selectively disable fs operations used by
catalogd
Key: IMPALA-7408
URL: https://issues.apache.org/jira/browse/IMPALA-7408
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Reporter: Vuk Ercegovac
Assignee: Vuk Ercegovac
Its often useful to start an Impala cluster when only metadata is present, for
example, HMS data and HDFS fsimage. In particular, this is useful when
debugging metadata-related issues.
However, catalogd requires FS operations that depend on data blocks, not just
metadata. Examples include Avro schema files and function jars that which are
stored on the FS. When these cases come up in large instances, a substantial
amount of time is spent trying/failing/throwing an exception. To skip this, we
can add a flag that suppresses these operations. The flag will be hidden-- its
only use is for reproducing metadata-related issues/development.
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