Cannot read property 'filter' of undefined

[FredrikL]

Using version 1.5.0
Node 8.1.4
Neo4j 3.1.1 (singel instance) & 3.2.3 (Casual cluster)
Linux / Debian

A couple of time per day we get this error, since it happens outside the normal process chain we're unable to catch it and the stack trace doesn't point to anything obvious.

TypeError: Cannot read property 'filter' of undefined
    at node_modules/neo4j-driver/lib/v1/internal/pool.js:115:44
    at Timeout._onTimeout (node_modules/neo4j-driver/lib/v1/internal/util.js:150:9)
    at ontimeout (timers.js:488:11)
    at tryOnTimeout (timers.js:323:5)
    at Timer.listOnTimeout (timers.js:283:5)
    at listOnTimeoutNT (timers.js:359:26)
    at _combinedTickCallback (internal/process/next_tick.js:99:11)
    at process._tickDomainCallback (internal/process/next_tick.js:198:9)

[lutovich]

Hi @FredrikL,

Thanks for reporting this problem. We will investigate.

[Thiago-Caramelo]

We also get this error a few times per day.

At client side:

TypeError: Cannot read property 'filter' of undefined
at /user_code/node_modules/neo4j-driver/lib/v1/internal/pool.js:115:44
at Timeout._onTimeout (/user_code/node_modules/neo4j-driver/lib/v1/internal/util.js:150:9)
at ontimeout (timers.js:386:11)
at tryOnTimeout (timers.js:250:5)
at Timer.listOnTimeout (timers.js:214:5)

At server side:

WARN Illegal character 0x3 in state=START for buffer HeapByteBuffer@5707b2f0[p=1,l=1,c=8192,r=0]={\x03<<<>>>ET / HTTP/1.1\r\nHo...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}

WARN badMessage: 400 Illegal character 0x3 for HttpChannelOverHttp@18fd5c5b{r=0,c=false,a=IDLE,uri=}

I'm not sure if they are related.

[lutovich]

@FredrikL, @Thiago-Caramelo this issue should be fixed by the mentioned PR. I think that error in the database logs in not related because it does not originate from Bolt server component.

[Guardiannw]

@lutovich What version of the driver should we expect this fix in?

[lutovich]

@Guardiannw in 1.5.2. We will try to release it this week.

[lutovich]

Version 1.5.2 with the mentioned fix is now released and available on NPM. Please report if it does not solve the problem. Thanks!

[FredrikL]

@lutovich We're still seeing the same problem

TypeError: Cannot read property 'filter' of undefined
   at /node_modules/neo4j-driver/lib/v1/internal/pool.js:115:44
   at Timeout._onTimeout (/node_modules/neo4j-driver/lib/v1/internal/util.js:152:9)
   at ontimeout (timers.js:488:11)
   at tryOnTimeout (timers.js:323:5)
   at Timer.listOnTimeout (timers.js:283:5)

[Guardiannw]

We are also still seeing this problem, even after the new version.

[Guardiannw]

@lutovich Can you provide any details on the status?

[lutovich]

Sorry, I missed the message from @FredrikL. We will investigate

[lutovich]

This issue should be fixed in the newly released 1.6.0 version of the driver. I'll close this issue now. Please feel free to update it if the issue reoccurs.