Hello,
We're using the Apache snapshot repository to pull latest tez snapshots. 
We've started seeing this exception:
org.apache.tez.dag.api.TezUncheckedException: java.util.zip.ZipException: 
incorrect header check
at 
org.apache.tez.dag.library.vertexmanager.ShuffleVertexManager.handleVertexManagerEvent(ShuffleVertexManager.java:622)
at 
org.apache.tez.dag.library.vertexmanager.ShuffleVertexManager.onVertexManagerEventReceived(ShuffleVertexManager.java:579)
at 
org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerEventReceived.invoke(VertexManager.java:606)
at 
org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerEvent$1.run(VertexManager.java:647)
at 
org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerEvent$1.run(VertexManager.java:642)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at 
org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerEvent.call(VertexManager.java:642)
at 
org.apache.tez.dag.app.dag.impl.VertexManager$VertexManagerEvent.call(VertexManager.java:631)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.zip.ZipException: incorrect header check
at java.util.zip.InflaterInputStream.read(InflaterInputStream.java:164)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)
at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)
at org.apache.commons.io.IOUtils.copy(IOUtils.java:1744)
at org.apache.commons.io.IOUtils.toByteArray(IOUtils.java:462)


since this commit
https://github.com/apache/tez/commit/da4098b9d6f72e6d4aacc1623622a0875408d2ba


Wanted to bring this to your attention. For now we've locked the snapshot 
version down.
thanks,Madhu

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