Logstash.err log file starts with zero bytes

Hello,

This is possibly a bug: I discovered that logstash.err log file starts with an array of zero bytes, which makes it hard (but not impossible) to read by text viewers. I use LogStash 2.2.2.

> file logstash.err
logstash.err: data

> hexdump  -C logstash.err
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00006650  00 00 00 00 00 00 00 00  00 00 00 00 00 00 4d 61  |..............Ma|
00006660  72 20 30 37 2c 20 32 30  31 36 20 31 32 3a 31 37  |r 07, 2016 12:17|
00006670  3a 32 37 20 41 4d 20 6f  72 67 2e 61 70 61 63 68  |:27 AM org.apach|
00006680  65 2e 68 74 74 70 2e 69  6d 70 6c 2e 65 78 65 63  |e.http.impl.exec|
00006690  63 68 61 69 6e 2e 52 65  74 72 79 45 78 65 63 20  |chain.RetryExec |
000066a0  65 78 65 63 75 74 65 0a  49 4e 46 4f 3a 20 49 2f  |execute.INFO: I/|
000066b0  4f 20 65 78 63 65 70 74  69 6f 6e 20 28 6a 61 76  |O exception (jav|
000066c0  61 2e 6e 65 74 2e 53 6f  63 6b 65 74 45 78 63 65  |a.net.SocketExce|
000066d0  70 74 69 6f 6e 29 20 63  61 75 67 68 74 20 77 68  |ption) caught wh|
000066e0  65 6e 20 70 72 6f 63 65  73 73 69 6e 67 20 72 65  |en processing re|
000066f0  71 75 65 73 74 20 74 6f  20 7b 7d 2d 3e 68 74 74  |quest to {}->htt|

...

MG