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https://issues.apache.org/jira/browse/PIO-59?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15959378#comment-15959378
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Juha Syrjälä commented on PIO-59:
---------------------------------
According this blog post
https://tersesystems.com/2015/12/17/the-right-way-to-use-securerandom/ it
should be a single line fix in
data/src/main/scala/org/apache/predictionio/data/storage/AccessKeys.scala
Change this:
/** Default implementation of key generation */
def generateKey: String = {
val sr = SecureRandom.getInstanceStrong
to this:
/** Default implementation of key generation */
def generateKey: String = {
val sr = new SecureRandom
I can try to a merge request for this, if this kind of change would be accepted.
> "pio app new" sometimes takes long time
> ---------------------------------------
>
> Key: PIO-59
> URL: https://issues.apache.org/jira/browse/PIO-59
> Project: PredictionIO
> Issue Type: Improvement
> Reporter: Shinsuke Sugaya
> Priority: Minor
>
> Some users reported this problem in user ML, and I also encountered it.
> Checking stack traces, I think the cause is an entropy shortage for
> /dev/random.
> {code}
> "main" #1 prio=5 os_prio=0 tid=0x00007fc94803f800 nid=0x49a9 runnable
> [0x00007fc94fa1b000]
> java.lang.Thread.State: RUNNABLE
> at java.io.FileInputStream.readBytes(Native Method)
> at java.io.FileInputStream.read(FileInputStream.java:255)
> at
> sun.security.provider.NativePRNG$RandomIO.readFully(NativePRNG.java:424)
> at
> sun.security.provider.NativePRNG$RandomIO.ensureBufferValid(NativePRNG.java:525)
> at
> sun.security.provider.NativePRNG$RandomIO.implNextBytes(NativePRNG.java:544)
> - locked <0x00000003d34e8a48> (a java.lang.Object)
> at
> sun.security.provider.NativePRNG$RandomIO.access$400(NativePRNG.java:331)
> at
> sun.security.provider.NativePRNG$Blocking.engineNextBytes(NativePRNG.java:268)
> at java.security.SecureRandom.nextBytes(SecureRandom.java:468)
> at
> org.apache.predictionio.data.storage.AccessKeys$class.generateKey(AccessKeys.scala:71)
> at
> org.apache.predictionio.data.storage.elasticsearch.ESAccessKeys.generateKey(ESAccessKeys.scala:40)
> at
> org.apache.predictionio.data.storage.elasticsearch.ESAccessKeys.insert(ESAccessKeys.scala:60)
> at
> org.apache.predictionio.tools.commands.App$$anonfun$create$4$$anonfun$apply$5.apply(App.scala:71)
> at
> org.apache.predictionio.tools.commands.App$$anonfun$create$4$$anonfun$apply$5.apply(App.scala:62)
> at scala.Option.map(Option.scala:145)
> at
> org.apache.predictionio.tools.commands.App$$anonfun$create$4.apply(App.scala:62)
> at
> org.apache.predictionio.tools.commands.App$$anonfun$create$4.apply(App.scala:55)
> at scala.Option.getOrElse(Option.scala:120)
> at org.apache.predictionio.tools.commands.App$.create(App.scala:55)
> at
> org.apache.predictionio.tools.console.Pio$App$.create(Pio.scala:172)
> at
> org.apache.predictionio.tools.console.Console$$anonfun$main$1.apply(Console.scala:683)
> at
> org.apache.predictionio.tools.console.Console$$anonfun$main$1.apply(Console.scala:626)
> at scala.Option.map(Option.scala:145)
> at
> org.apache.predictionio.tools.console.Console$.main(Console.scala:626)
> at org.apache.predictionio.tools.console.Console.main(Console.scala)
> {code}
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