Yashaswini G A created HDDS-15521:
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Summary: StreamBlockInputStream fails with TimeoutIOException
without retry or datanode failover
Key: HDDS-15521
URL: https://issues.apache.org/jira/browse/HDDS-15521
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Datanode
Reporter: Yashaswini G A
With {{{}ozone.client.stream.readblock.enable=true{}}}, Ozone client reads fail
when the datanode selected for streaming read is unavailable or slow. The
client times out after 10s and does not retry or fail over to another replica.
*Config set*
{{<name>ozone.client.stream.readblock.enable</name> <value>true</value>}}
h3.
Steps to Reproduce
# Enable {{ozone.client.stream.readblock.enable=true}}
# Write a key with replication factor 3 (all datanodes up)
# Stop 1–2 datanodes hosting the block replicas
# Run {{ozone sh key get o3://<vol>/<bucket>/<key> /tmp/<file}}
*Command fails with:*
{{WARN storage.StreamBlockInputStream: stream0-reader0: Failed to
setCompleted: already completed
exceptionallyjava.util.concurrent.ExecutionException:
org.apache.ratis.protocol.exceptions.TimeoutIOException: Timed out waiting for
response after PT10S}}
*Expected Result*
Read should succeed by reading from a healthy replica, same as the legacy
{{{}BlockInputStream{}}}/{{{}readChunk{}}} path.
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