[Solved] You wrote this sink connector config:{ "name": "my-sink-connector", "config": { "connector.class": "FileStreamSink", "tasks.max": "1", "file": "/tmp/output.txt", "topic":... | Kafka

Kafka - Connect

You wrote this sink connector config:

{
  "name": "my-sink-connector",
  "config": {
    "connector.class": "FileStreamSink",
    "tasks.max": "1",
    "file": "/tmp/output.txt",
    "topic": "input-topic"
  }
}

But no data appears in /tmp/output.txt after running. What is the likely problem?

AThe connector class name is incorrect; it should be FileStreamSource

BThe file path /tmp/output.txt is not writable by the connector

CThe topic name 'input-topic' does not exist or has no data

DThe tasks.max value must be greater than 1

Step-by-Step Solution

Solution:

Step 1: Check connector class correctness
The class FileStreamSink is correct for writing Kafka data to a file.
Step 2: Verify topic existence and data flow
If the topic input-topic does not exist or has no data, no output will be written.
Final Answer:
The topic name 'input-topic' does not exist or has no data -> Option C
Quick Check:
Sink needs data in topic to write = B [OK]

Quick Trick: Check topic exists and has data for sink connectors [OK]

Common Mistakes:

MISTAKES

Assuming connector class is wrong when it is correct
Ignoring topic data availability
Thinking tasks.max affects data flow directly

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You wrote this sink connector config:

Step 1: Check connector class correctness

Step 2: Verify topic existence and data flow

Final Answer:

Quick Check:

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