[jira] [Created] (KAFKA-5104) DumpLogSegments should not open index files with `rw`

[Yeva Byzek (JIRA)]

Yeva Byzek created KAFKA-5104:
---------------------------------

             Summary: DumpLogSegments should not open index files with `rw`
                 Key: KAFKA-5104
                 URL: https://issues.apache.org/jira/browse/KAFKA-5104
             Project: Kafka
          Issue Type: Improvement
          Components: log
    Affects Versions: 0.10.2.0
         Environment: Kafka is run as root
            Reporter: Yeva Byzek
            Priority: Minor


kafka.tools.DumpLogSegments requires sudo for index files but not for log 
files. It seems inconsistent why `w` access would be required for the index 
files just to dump the output.

{noformat}
$ sudo kafka-run-class kafka.tools.DumpLogSegments  --files 
00000000000000000000.index
Dumping 00000000000000000000.index
offset: 0 position: 0
{noformat}

{noformat}
$ kafka-run-class kafka.tools.DumpLogSegments  --files 
00000000000000000000.indexDumping 00000000000000000000.index
Exception in thread "main" java.io.FileNotFoundException: 
00000000000000000000.index (Permission denied)
    at java.io.RandomAccessFile.open0(Native Method)
    at java.io.RandomAccessFile.open(RandomAccessFile.java:316)
    at java.io.RandomAccessFile.<init>(RandomAccessFile.java:243)
    at kafka.log.AbstractIndex.<init>(AbstractIndex.scala:50)
    at kafka.log.OffsetIndex.<init>(OffsetIndex.scala:52)
    at 
kafka.tools.DumpLogSegments$.kafka$tools$DumpLogSegments$$dumpIndex(DumpLogSegments.scala:137)
    at 
kafka.tools.DumpLogSegments$$anonfun$main$1.apply(DumpLogSegments.scala:100)
    at 
kafka.tools.DumpLogSegments$$anonfun$main$1.apply(DumpLogSegments.scala:93)
    at 
scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
    at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
    at kafka.tools.DumpLogSegments$.main(DumpLogSegments.scala:93)
    at kafka.tools.DumpLogSegments.main(DumpLogSegments.scala)
{noformat}




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