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https://issues.apache.org/jira/browse/LUCENE-6564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585635#comment-14585635
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Michael McCandless commented on LUCENE-6564:
--------------------------------------------
Oh that's bad bad bad that SimpleDateFormat is not thread safe.
But I do find msec time to be helpful when debugging tests ... I don't think we
should make tests even harder to debug.
What if we switch to a simple "seconds since start"? E.g.:
{noformat}
IW 2 [0.0327s; main]: now flush at close
IW 2 [0.0328s; main]: start flush: applyAllDeletes=true
IW 2 [0.0329s; main]: index before flush
DW 2 [0.0330s; main]: startFullFlush
DW 2 [0.0331s; main]: anyChanges? numDocsInRam=1 deletes=false hasTickets:false
pendingChangesInFullFlush: false
DWFC 2 [0.0333s; main]: addFlushableState DocumentsWriterPerThread
[pendingDeletes=gen=0, segment=_0, aborted=false, numDocsInRAM=1,
deleteQueue=DWDQ: [ generation: 0 ]]
DWPT 2 [0.0351s; main]: flush postings as segment _0 numDocs=1
DWPT 2 [0.0604s; main]: new segment has 0 deleted docs
DWPT 2 [0.0606s; main]: new segment has no vectors; norms; no docValues; prox;
freqs
DWPT 2 [0.0607s; main]: flushedFiles=[_0.nvd, _0.fdx, _0_Memory_0.ram, _0.fdt,
_0.nvm, _0.fnm]
{noformat}
> Normalize date format for IW in unit tests
> ------------------------------------------
>
> Key: LUCENE-6564
> URL: https://issues.apache.org/jira/browse/LUCENE-6564
> Project: Lucene - Core
> Issue Type: Improvement
> Components: general/test
> Reporter: Ramkumar Aiyengar
> Assignee: Ramkumar Aiyengar
> Priority: Minor
> Fix For: 5.3
>
> Attachments: LUCENE-6564.patch
>
>
> Noticed while debugging some IW output in an unit test that milliseconds were
> not output in the date, changed this to reuse the date format used by
> {{PrintStreamInfoStream}}.
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