THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
State
[
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progress record]:
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Proposed
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time:
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2022/05/06
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Discussion
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time:
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Acceptance
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time:
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Complete
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time:
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[issues]
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Document the state by adding a label to the LKIP page with one of “discussion”, “accepted”, “released”, “rejected”.
:
[email]：
[release]:
[proposer]:
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Motivation & Background
In
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the
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current
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version,
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an
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exception
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occurs
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when
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the
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Linkis
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Client
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submits
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the
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task.
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The
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client
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will
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decide
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whether
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to
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retry
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according
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to
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the
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parameter
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configuration.
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However,
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when
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an
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error
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occurs
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during
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the
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execution
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of
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the
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task,
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the
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client
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does
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not
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have
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a
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mechanism
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to
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retry,
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especially
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for
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some
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tasks,
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which
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may
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Because
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network,
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resource
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and
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other
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issues
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are
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not
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submitted
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to
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the
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EC
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for
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execution,
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in
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order
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to
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further
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improve
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the
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fault
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tolerance
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of
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the
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system,
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the
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client
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adds
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a
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retry
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function
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for
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tasks
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that
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report
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errors
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before
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being
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submitted
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to
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the
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EC
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for
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execution.
Basic concept
Expect to achieve goals
- Linkis
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- client
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- adds
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- a
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- task
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- retry
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- function
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- that
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- reports
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- an
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- error
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- if
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- it
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- is
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- not
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- submitted
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- to
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- the
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- ECM
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- for
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- execution
Implementation plan
- Linkis
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- Job
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- adds
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- the
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- attribute
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- retryNums,
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- whose
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- type
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- is
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- Int;
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- The
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- table
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- linkis_ps_job_history_group_history
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- adds
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- a
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- field
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- to
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- indicate
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- whether
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- to
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- enter
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- the
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- EC
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- for
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- execution:
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- execByEcm,
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- the
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- field
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- type
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- is
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- Boolean;
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- A
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- function
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- has
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- been
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- planned
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- for
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- this,
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- task
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- metrics
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- are
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- added
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- to
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- the
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- record
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- of
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- ec
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- information,
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- requirements:
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- https://github.com/apache/incubator-linkis/issues/2075
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- This
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- record
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- can
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- be
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- reused
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- .
- The
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- client
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- retry
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- function
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- is
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- added
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- to
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- isCompleted
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- of
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- LinkisJob.
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- This
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- method
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- has
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- two
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- implementation
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- classes:
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1.
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SimpleOnceJob
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This
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class
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is
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mainly
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for
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one-time
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submitted
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tasks,
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such
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as
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datax,
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sqoop
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and
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other
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engines,
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and
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does
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not
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require
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data
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interaction.
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This
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type
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does
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not
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consider
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this
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type
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of
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retry
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for
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the
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time
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being
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2.
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StorableLinkisJob
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This
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class
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is
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mainly
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for
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once
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job
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type
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tasks,
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such
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as
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hive,
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spark
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and
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other
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engines,
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with
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data
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data
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interaction
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override
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def
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isCompleted:
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Boolean
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=
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getJobInfoResult.isCompleted
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getJobInfoResult
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obtains
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the
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execution
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status
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table:
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linkis_ps_job_history_group_history
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through
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the
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interface
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jobhistory.
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- Retry
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- process
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- After
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- the
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- task
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- enters
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- the
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- ECM,
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- update
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- the
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- execByEcm
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- field
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- to
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- true;
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Things
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to
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Consider
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&
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Note:
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- Do
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- you
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- need
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- to
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- consider
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- the
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- compatibility
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- of
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- the
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- original
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- parameter
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- method?
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- Retry
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- is
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- only
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- supported
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- if
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- retry
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- is
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- added.
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- If
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- it
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- is
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- not
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- added,
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- it
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- is
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- still
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- the
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- original
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- logic.
Changes
| Modification | Detail | |
|---|---|---|
| 1 | Modification of maven module | |
| 2 | Modification of HTTP interface | |
| 3 | Modification of the client interface | |
| 4 | Modification of database table structure | |
| 5 | Modification of configuration item | |
| 6 | Modification Error code | |
| 7 | Modifications for Third Party Dependencies |
Compatibility, Deprecation, and Migration Plan
- What impact (if any) will there be on existing users?
- If we are changing behavior, how will we phase out the older behavior?
- If we require special migration tools, describe them here.
- When will we remove the existing behavior?
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