Github user WangTaoTheTonic commented on the pull request:
https://github.com/apache/spark/pull/3841#issuecomment-68421043
After this patch, the logs of running 3 application with
`spark.port.maxRetries=1` were:
>14/12/31 11:02:06 INFO Utils: Starting service 'SparkUI' on port 23000
with maximum 1 retries.
14/12/31 11:02:06 INFO Utils: Successfully started service 'SparkUI' on
port 23000.
14/12/31 11:02:06 INFO SparkUI: Started SparkUI at
http://dc1-rack1-host2:23000
>14/12/31 11:02:11 INFO Utils: Starting service 'SparkUI' on port 23000
with maximum 1 retries.
14/12/31 11:02:11 WARN Utils: Service 'SparkUI' could not bind on port
23000. Attempting port 23001.
14/12/31 11:02:11 INFO Utils: Successfully started service 'SparkUI' on
port 23001.
14/12/31 11:02:11 INFO SparkUI: Started SparkUI at
http://dc1-rack1-host2:23001
ã14/12/31 11:02:28 INFO Utils: Starting service 'SparkUI' on port 23000
with maximum 1 retries.
14/12/31 11:02:28 WARN Utils: Service 'SparkUI' could not bind on port
23000. Attempting port 23001.
14/12/31 11:02:28 ERROR SparkUI: Failed to bind SparkUI
java.net.BindException: Address already in use: Service 'SparkUI' failed
after 1 retries!
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:344)
at sun.nio.ch.Net.bind(Net.java:336)
And I oberved other port on driver and executors, they acted as expected
too.
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