Threads blocking on BaseInputStream initialization

[Seva]

I'm running some queries in multiple (like ~100) threads using plain JDBC and
MS JDBC driver.
What I'm observing is that most threads are waiting for
java.util.logging.Logger class monitor trying to enter
java.util.logging.Logger.getLogger() static method in
com.microsoft.sqlserver.jdbc.BaseInputStream constructor. So stack trace
looks like this for _almost_all_threads:

"MultiDataGridTask-193763-81841" prio=6 tid=0x0000000015f65200 nid=0x1108
waiting for monitor entry [0x000000002c38e000..0x000000002c38fb60]
at java.util.logging.Logger.getLogger(Unknown Source)
- waiting to lock <0x00000000804c9488> (a java.lang.Class)
at com.microsoft.sqlserver.jdbc.BaseInputStream.(Unknown Source)
at com.microsoft.sqlserver.jdbc.SimpleInputStream.(Unknown Source)
at com.microsoft.sqlserver.jdbc.DDC.convertNonUnicodeNonPLPToObject(Unknown
Source)
at com.microsoft.sqlserver.jdbc.ServerDTVImpl.getValue(Unknown Source)
at com.microsoft.sqlserver.jdbc.DTV.getValue(Unknown Source)
at com.microsoft.sqlserver.jdbc.Column.getValue(Unknown Source)
at com.microsoft.sqlserver.jdbc.Column.getValue(Unknown Source)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getObject(Unknown Source)
at our.code.base.RowSet.sendToWriter(RowSet.java:90)

There are two problems about that:
1) it's probably bad idea to instantiate a logger every time the stream is
instantiating (let's see if it's fixed in the next release)

2) I don't see a thread that owns (locks) that monitor in the full thread
dump! Can someone please comment on this - how is this ever possible?

Any hints/ideas on workaround are highly appreciated.
Regards,
Seva

[Evan T. Basalik (MSFT)]

A case has been opened on this and we are working directly with Seva to understand the best way to address this issue.

Evan (MSFT)
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Evan T. Basalik
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