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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Data_Analytics1
by • Contributor III
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Failure starting repl. How to resolve this error? I got this error in a job which is running.

Failure starting repl. Try detaching and re-attaching the notebook.java.lang.Exception: Python repl did not start in 30 seconds. at com.databricks.backend.daemon.driver.IpykernelUtils$.startIpyKernel(JupyterDriverLocal.scala:1442) at com.databricks.b...

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PabloCSD
Valued Contributor
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I have had this problem many times, today I made a copy of the cluster and it got "de-saturated", it could help someone in the future

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liamod_1
by • New Contributor III
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Resolved! Failure starting repl

Hi, we have several clusters that keep giving this error:Failure starting repl. Try detaching and re-attaching the notebook.All the investigation I've done points to this issue being related to the number of concurrent connections but we only have 1 ...

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liamod_1
New Contributor III
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@Aviral Bhardwaj​ thanks, this seemed to fix the issue, we had an innit script that was potentially conflicting with UI set libraries (in cluster settings).

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JordanYaker
by • Contributor
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Resolved! Is anyone else experiencing intermittent "Failure starting REPL" errors with PySpark Jobs?

I have a Multi-Task Job that is running a bunch of PySpark notebooks and about 30-60% of the time, my jobs fail with the following error:I haven't seen any consistency with this error. I've had as many as all of the tasks in the job giving this error...

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James_Cole
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Hi. Did you ever got a resolution to this problem outside of rolling back to 10.4? I have recently moved some workloads over to runtime 11.3 and am experiencing intermittent "repl did not start in 30 seconds." errors.I have increased the repl timeout...

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tonykun
by • New Contributor
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A dumb general question - why databricks no support java REPL?

I'm a new student to programming world, have strong interest in data engineering and databricks technology. I've tried this product, the UI, notebook, dbfs are very user-friendly and powerful.Recently, a doubt came to my mind why databricks doesn't s...

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