# Error accessing dremio session

**URL:** <https://community.dremio.com/t/error-accessing-dremio-session/1176>\
**Category:** Uncategorized\
**Created:** [May 19, 2018, 12:29pm UTC](https://community.dremio.com/t/error-accessing-dremio-session/1176 "2018-05-19T12:29:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![benjose](https://avatars.discourse-cdn.com/v4/letter/b/c67d28/32.png) [@benjose](https://community.dremio.com/u/benjose)\
**Post date:** [May 19, 2018, 12:29pm UTC](https://community.dremio.com/t/error-accessing-dremio-session/1176/1 "2018-05-19T12:29:35Z")

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I am getting this error after re-starting the Dremio server. Snapshot below.

 ![image](https://us1.discourse-cdn.com/flex020/uploads/dremio/original/1X/10e28b0c5f821491c190ad1c7b3cb9a26b2b372d.png)

Looking at some of the files in the ./dremio/log, I see an error which points towards the reflection manager:

2018-05-19T12:23:22.211+0000: 11.150: [GC (Allocation Failure) [PSYoungGen: 508416K-\>10800K(735232K)] 521496K-\>23888K(844288K), 0.0095259 secs] [Times: user=0.01 sys=0.01, real=0.01 secs]  
2018-05-19T12:23:24.210+0000: 13.149: [GC (Allocation Failure) [PSYoungGen: 734768K-\>23541K(749568K)] 747856K-\>58222K(858624K), 0.0275216 secs] [Times: user=0.04 sys=0.01, real=0.03 secs]  
2018-05-19T12:23:25.256+0000: 14.195: [GC (Metadata GC Threshold) [PSYoungGen: 334659K-\>12120K(1039360K)] 369339K-\>50288K(1148416K), 0.0160343 secs] [Times: user=0.04 sys=0.00, real=0.02 secs]  
2018-05-19T12:23:25.272+0000: 14.211: [Full GC (Metadata GC Threshold) [PSYoungGen: 12120K-\>0K(1039360K)] [ParOldGen: 38168K-\>29484K(155648K)] 50288K-\>29484K(1195008K), [Metaspace: 58189K-\>58167K(1101824K)], 0.1705392 secs] [Times: user=0.56 sys=0.00, real=0.17 secs]  
2018-05-19T12:23:51.763+0000: 40.702: [GC (Allocation Failure) [PSYoungGen: 1013760K-\>33249K(1047040K)] 1043244K-\>69986K(1202688K), 0.0358391 secs] [Times: user=0.09 sys=0.02, real=0.04 secs]

Any thoughts ?

\_Ben

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<div class="post-metadata">

**Author:** ![anthony](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/anthony/32/670_2.png) [@anthony](https://community.dremio.com/u/anthony)\
**Post date:** [May 19, 2018, 1:54pm UTC](https://community.dremio.com/t/error-accessing-dremio-session/1176/2 "2018-05-19T13:54:04Z")

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Can you share server.out and server.log please?